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###############################################################################
#                                                                             #
#  Lout @DocumentSetup package                                                #
#                                                                             #
#  Version 1.0 by Jeffrey H. Kingston, 17 July 1991.                          #
#  Version 2.0 by Jeffrey H. Kingston, 22 December 1992.                      #
#  Version 3.0 by Jeffrey H. Kingston, 19 April 1994.                         #
#  Version 3.03 by Jeffrey H. Kingston, 6 May 1995.                           #
#  Versions 3.04 and 3.05 by Jeffrey H. Kingston, 11 June 1995.               #
#  Version 3.05 by Jeffrey H. Kingston, 25 July 1995.                         #
#  Version 3.07 by Jeffrey H. Kingston, February 1996.                        #
#  Version 3.10 by Jeffrey H. Kingston, September 1996.                       #
#  Version 3.11 by Jeffrey H. Kingston, December 1996.                        #
#  Version 3.13 by Jeffrey H. Kingston, October 1998.                         #
#  Version 3.16 by Jeffrey H. Kingston, May 1999.                             #
#  Version 3.17 by Jeffrey H. Kingston, September 1999.                       #
#  Version 3.21 by Jeffrey H. Kingston, May 2000.                             #
#                                                                             #
#  This Lout package contains the general definitions used by all types of    #
#  documents.  It needs to be extended (see docf, reportf, bookf, slidesf,    #
#  etc.) with definitions for particular document types.  Consult "A User's   #
#  Guide to the Lout Document Formatting System" for user information.        #
#                                                                             #
###############################################################################

extend @BasicSetup

export

    @Runner
	
    @Figure @Table
    @FootNote @AnotherFootNote @EndNote
    @LeftNote @RightNote @OuterNote @InnerNote @Place
    @Theorem @Proof @EndProof
    @Definition @Claim @Proposition @Lemma @Corollary @Example
    @Reference @RefStyle @RefPrint
    @Ref @NoRef @ChapRef @NoChapRef
    @Cite @NoCite @ChapCite @NoChapCite

    @IndexA @SubIndexA @SubSubIndexA @RawIndexA
    @RawSubIndexA @RawSubSubIndexA @IndexABlanks

    @IndexB @SubIndexB @SubSubIndexB @RawIndexB
    @RawSubIndexB @RawSubSubIndexB @IndexBBlanks

    @Index @SubIndex @SubSubIndex @RawIndex
    @RawSubIndex @RawSubSubIndex @IndexBlanks

    @BypassContentsEntry @BypassMajorContentsEntry
    @BypassFigureContentsEntry @BypassTableContentsEntry
    @BypassReference @BypassChapReference
    @BypassBeginIndex @BypassRawIndex @BypassEndIndex
    @BypassBeginIndexA @BypassRawIndexA @BypassEndIndexA
    @BypassBeginIndexB @BypassRawIndexB @BypassEndIndexB


def @DocumentSetup
    named @PageType		{ A4    @OrIfPlain Other} # page type (width, height)
    named @PageWidth		{ 80s			} # page width if type Other
    named @PageHeight		{ 66f			} # page height if type Other
    named @PageOrientation	{ Portrait		} # Portrait, Landscape, etc.
    named @PageBackground	{			} # background of each page
    named @TopMargin		{ 2.50c  @OrIfPlain 6f	} # top margin of all pages
    named @FootMargin		{ 2.50c  @OrIfPlain 6f	} # bottom margin of all pages
    named @OddLeftMargin	{ 2.50c  @OrIfPlain 10s	} # left margin of odd pages
    named @OddRightMargin	{ 2.50c  @OrIfPlain 10s	} # right margin of odd pages
    named @EvenLeftMargin	{ 2.50c  @OrIfPlain 10s	} # left margin of even pages
    named @EvenRightMargin	{ 2.50c  @OrIfPlain 10s	} # right margin of even pages
    named @OddLeftBodyMargin	{ 0c			} # extra margin for page body
    named @OddRightBodyMargin	{ 0c			} # extra margin for page body
    named @EvenLeftBodyMargin	{ 0c			} # extra margin for page body
    named @EvenRightBodyMargin	{ 0c			} # extra margin for page body
    named @PageBoxType		{ None			} # None Box CurveBox ShadowBox
    named @PageBoxMargin	{ 1.00c			} # page box margin
    import @LengthUnits named @PageBoxLineWidth
				{			} # page box line thickness
    named @PageBoxPaint		{  none			} # page box paint
    named @PageBoxShadow	{  0.60c		} # shadow margin if ShadowBox
    named @PageEnclose right @Body { @Body		} # page enclose
    named @ColumnNumber		{  1			} # number of columns (1 to 10)
    named @ColumnGap		{  1.00c @OrIfPlain 6s	} # column gap
    named @FigureLocation	{  PageTop		} # default figure location
    named @TableLocation	{  PageTop		} # default table location
    named @FigureFormat
    	named @II right x { |@DisplayIndent x |      }
    	named @QQ right x { |@DisplayIndent x |@DisplayIndent }
    	named @CC right x { |0.5rt x |      }
    	named @RR right x { |1.0rt x |      }
	right @Body
				{  @CC @Body		} # default figure format
    named @TableFormat
    	named @II right x { |@DisplayIndent x |      }
    	named @QQ right x { |@DisplayIndent x |@DisplayIndent }
    	named @CC right x { |0.5rt x |      }
    	named @RR right x { |1.0rt x |      }
	right @Body
				{  @CC @Body		} # default table format
    named @FigureWord		{  figure		} # "Figure" word else anything
    named @TableWord		{  table		} # "Table" word else anything
    named @FigureNumbers	{  Arabic		} # method of numbering figures
    named @TableNumbers		{  Arabic		} # method of numbering tables
    named @FigureCaptionPos	{  Below		} # Above or Below
    named @TableCaptionPos	{  Below		} # Above or Below
    named @FigureCaptionFont    {  -2p 			} # figure caption font
    named @FigureCaptionBreak   {  adjust hyphen 1.2fx	} # figure caption break
    named @FigureCaptionFormat named word {} named number {} named caption {}
				{  {@B { word @NumSep number. &2s }} @Insert caption }
    named @TableCaptionFont     {  -2p			} # figure caption font
    named @TableCaptionBreak    {  adjust hyphen 1.2fx	} # figure caption break
    named @TableCaptionFormat named word {} named number {} named caption {}
				{  {@B { word @NumSep number. &2s }} @Insert caption }
    named @MakeFigureContents   {  No			} # list of figures at start
    named @MakeTableContents    {  No			} # list of tables at start
    named @MakeContents		{  No			} # make contents? Yes or No
    named @ContentsGap		{  0.20v @OrIfPlain 0f	} # extra gap above minor entry
    named @ContentsGapAbove	{  0.80v @OrIfPlain 1f	} # extra gap above major entry
    named @ContentsGapBelow	{  0.00v @OrIfPlain 0f	} # extra gap below major entry
    named @ContentsFont    	{  Bold                 } # font for major entry
    named @ContentsPartGapAbove	{  1.00v @OrIfPlain 1f  } # extra gap above part entry
    named @ContentsPartGapBelow	{  0.00v @OrIfPlain 0f  } # extra gap below part entry
    named @ContentsFormat
	left number
	right title
				{  number @Sep title } # contents format
    named @ContentsLeader	{  ..			} # leader symbol in contents
    named @ContentsLeaderGap	{  4s    @OrIfPlain 2s	} # gap between leaders
    named @ContentsRightWidth	{  3f    @OrIfPlain 6s	} # page numbers column width

    named @MakeReferences	{  Yes			} # make references? Yes or No
    named @RefCiteStyle right cite {  [cite]		} # citation style
    named @RefCiteLabels
	named @RefNum       {}
	named @Tag          {}
	named @Type         {}
	named @Abstract     {}
	named @Address      {}
	named @Annote       {}
	named @Author       {}
	named @Day          {}
	named @Edition      {}
	named @HowPublished {}
	named @InAuthor     {}
	named @InTitle      {}
	named @Institution  {}
	named @Journal      {}
	named @Keywords     {}
	named @Label        {}
	named @Month        {}
	named @Note         {}
	named @Number       {}
	named @Organization {}
	named @Page         {}
	named @Pages        {}
	named @Pinpoint     {}
	named @Publisher    {}
	named @Title        {}
	named @TitleNote    {}
	named @TRType       {}
	named @Volume       {}
	named @Year         {}
				{  @RefNum		} # citation items
    named @RefNumbers		{  Arabic		} # reference numbers

    named @RefListFormat	{  Labels		} # NoLabels, Labels,
						  	# DropLabels, IntegrateLabels
    named @RefListLabels
	named @RefNum       {}
	named @Tag          {}
	named @Type         {}
	named @Abstract     {}
	named @Address      {}
	named @Annote       {}
	named @Author       {}
	named @Day          {}
	named @Edition      {}
	named @HowPublished {}
	named @InAuthor     {}
	named @InTitle      {}
	named @Institution  {}
	named @Journal      {}
	named @Keywords     {}
	named @Label        {}
	named @Month        {}
	named @Note         {}
	named @Number       {}
	named @Organization {}
	named @Page         {}
	named @Pages        {}
	named @Pinpoint     {}
	named @Publisher    {}
	named @Title        {}
	named @TitleNote    {}
	named @TRType       {}
	named @Volume       {}
	named @Year         {}
				{  [@RefNum]		} # ref list label format
    named @RefListTitle		{  references		} # title of reference list
    named @ChapRefListTitle	{  references		} # title of chapter ref list
    named @RefListIndent	{  0s			} # indent to left of labels
    named @RefListRightIndent	{  0s			} # indent to right of items
    named @RefListGap		{  @ListGap		} # gap between ref list items
    named @RefListFont		{			} # font used in reference list
    named @RefListBreak		{			} # break style of ref list
    named @RefListLabelWidth 	{  @ListLabelWidth	} # numeric labels column width
    named @RefListSortKey
	named @Tag          {}
	named @Type         {}
	named @Abstract     {}
	named @Address      {}
	named @Annote       {}
	named @Author       {}
	named @Day          {}
	named @Edition      {}
	named @HowPublished {}
	named @InAuthor     {}
	named @InTitle      {}
	named @Institution  {}
	named @Journal      {}
	named @Keywords     {}
	named @Label        {}
	named @Month        {}
	named @Note         {}
	named @Number       {}
	named @Organization {}
	named @Page         {}
	named @Pages        {}
	named @Pinpoint     {}
	named @Publisher    {}
	named @Title        {}
	named @TitleNote    {}
	named @TRType       {}
	named @Volume       {}
	named @Year         {}
	named ":"	    { "\037" }
				{  @Tag			} # sorting key

    named @MakeIndex		{  No			} # make index? Yes or No
    named @IndexFont		{			} # index entries font
    named @IndexBreak		{ {oragged 1.2fx} @OrIfPlain {oragged 1fx}	} # index entries break
    named @IndexColumnNumber	{  2			} # index columns (1 to 10)
    named @IndexColumnGap	{  1.00c @OrIfPlain 6s	} # index column gap
    named @IndexCtd		{  Yes			} # include (ctd.) lines
    named @IndexCtdWord		{  continued		} # "ctd." in current lang
    named @IndexCtdFormat
	left @Body
	right @CtdWord
				{  @Body @I (@CtdWord)	} # (ctd.) format
    named @MakeIndexA		{  No			} # make index A? Yes or No
    named @IndexAFont		{			} # index A entries font
    named @IndexABreak		{ {oragged 1.2fx} @OrIfPlain {oragged 1fx}	} # index A entries break
    named @IndexAColumnNumber	{  2			} # index A columns (1 to 10)
    named @IndexAColumnGap	{  1.00c @OrIfPlain 6s	} # index A column gap
    named @IndexACtd		{  Yes			} # include (ctd.) lines
    named @IndexACtdWord	{  continued		} # "ctd." in current lang
    named @IndexACtdFormat
	left @Body
	right @CtdWord
				{  @Body @I (@CtdWord)	} # (ctd.) format
    named @MakeIndexB		{  No			} # make index B? Yes or No
    named @IndexBFont		{			} # index B entries font
    named @IndexBBreak		{ {oragged 1.2fx} @OrIfPlain {oragged 1fx}	} # index B entries break
    named @IndexBColumnNumber	{  2			} # index B columns (1 to 10)
    named @IndexBColumnGap	{  1.00c @OrIfPlain 6s	} # index B column gap
    named @IndexBCtd		{  Yes			} # include (ctd.) lines
    named @IndexBCtdWord	{  continued		} # "ctd." in current lang
    named @IndexBCtdFormat
	left @Body
	right @CtdWord
				{  @Body @I (@CtdWord)	} # (ctd.) format
    named @TopGap		{  0.75c @OrIfPlain 2f	} # gap between figures
    named @MidGap		{  0.75c @OrIfPlain 2f	} # gap above/below body text

    named @FootNoteNumbers	{  Arabic		} # footnote numbers
    named @FootNoteThrough	{  No			} # numbered through chapter?
    named @FootNoteLocation	{  ColFoot		} # where the footnote appears
    named @FootNoteFont		{  0.80f		} # font for footnotes
    named @FootNoteBreak	{  1.2fx @OrIfPlain 1fx	} # break for footnotes
    named @FootNoteFormat left number right body
				{  { number &0.05f } @Insert body } # break for footnotes
    named @FootLen		{  2.00c @OrIfPlain 10s	} # length of footnote line
    named @FootAboveGap		{  @DisplayGap		} # gap above footnote line
    named @FootGap		{  0.20c @OrIfPlain 1fx	} # gap between footnotes

    named @MarginNoteFont	{  0.80f		} # font of margin notes
    named @MarginNoteBreak	{  ragged 1.10fx	} # break style of margin notes
    named @MarginNoteHGap	{  0.5c			} # horizontal gap to notes
    named @MarginNoteVGap	{  @DisplayGap		} # min vertical gap between
    named @MarginNoteWidth	{  1.50c		} # width of margin notes

    named @EndNoteNumbers	{  Arabic		} # endnote numbers
    named @EndNoteFont		{  0.80f		} # font of endnotes
    named @EndNoteBreak		{  1.2fx @OrIfPlain 1fx	} # break for endnotes
    named @EndNoteFormat left number right body
				{  { number &0.05f } @Insert body } # break for endnotes
    named @EndNoteGap		{  0.20c @OrIfPlain 1f	} # gap between endnotes

    named @TheoremWord		{  theorem		} # "Theorem" word, etc.
    named @TheoremTitleFormat right title
				{  (title)              } # Theorem title format if present
    named @TheoremFormat named word {} named number {} named title {} named body {} # theorem format
				{  { @B { word @NumSep number title: } &2s } @Insert body }
    named @DefinitionWord	{  definition		} # "Definition" word, etc.
    named @DefinitionTitleFormat{  (title)              } # Definition title format if present
    named @DefinitionFormat named word {} named number {} named title {} named body {} # definition format
				{  { @B { word @NumSep number title: } &2s } @Insert body }
    named @ClaimWord		{  claim		} # "Claim" word, etc.
    named @ClaimTitleFormat	{  (title)              } # Claim title format if present
    named @ClaimFormat named word {} named number {} named title {} named body {} # claim format
				{  { @B { word @NumSep number title: } &2s } @Insert body }
    named @PropositionWord	{  proposition		} # "Proposition" word, etc.
    named @PropositionTitleFormat{  (title)             } # Proposition title format if present
    named @PropositionFormat named word {} named number {} named title {} named body {} # proposition format
				{  { @B { word @NumSep number title: } &2s } @Insert body }
    named @LemmaWord		{  lemma		} # "Lemma" word, etc.
    named @LemmaTitleFormat	{  (title)              } # Lemma title format if present
    named @LemmaFormat named word {} named number {} named title {} named body {} # lemma format
				{  { @B { word @NumSep number title: } &2s } @Insert body }
    named @CorollaryWord	{  corollary		} # "Corollary" word, etc.
    named @CorollaryTitleFormat	{  (title)              } # Corollary title format if present
    named @CorollaryFormat named word {} named number {} named title {} named body {} # corollary format
				{  { @B { word @NumSep number title: } &2s } @Insert body }
    named @ExampleWord		{  example		} # "Example" word, etc.
    named @ExampleTitleFormat	{  (title)              } # Example title format if present
    named @ExampleFormat named word {} named number {} named title {} named body {} # example format
				{  { @B { word @NumSep number title: } &2s } @Insert body }
    named @ProofWord		{  proof		} # "Proof" word, etc.

    named @PageHeaders		{  Simple		} # None Simple Titles NoTitles
    named @PageNumbers		{  Arabic		} # page numbers
    named @FirstPageNumber	{  1			} # number of first page 
    named @IntroPageNumbers	{  Roman		} # intro page numbers
    named @IntroFirstPageNumber	{  1			} # number of first intro page 
    named @StructPageNums	{  No			} # structured page numbers

    named @OddTop	      right @PageNum { @Centre { - @PageNum - }	}
    named @OddFoot	      right @PageNum { @Null                    }
    named @EvenTop	      right @PageNum { @Centre { - @PageNum - }	}
    named @EvenFoot	      right @PageNum { @Null                    }
    named @StartOddTop	      right @PageNum { @Null                    }
    named @StartOddFoot	      right @PageNum { @Null                    }
    named @StartEvenTop	      right @PageNum { @Null                    }
    named @StartEvenFoot      right @PageNum { @Null                    }

    named @IntroOddTop	      right @PageNum { @Null                    }
    named @IntroOddFoot	      right @PageNum { @Centre @PageNum         }
    named @IntroEvenTop	      right @PageNum { @Null                    }
    named @IntroEvenFoot      right @PageNum { @Centre @PageNum         }
    named @IntroStartOddTop   right @PageNum { @Null                    }
    named @IntroStartOddFoot  right @PageNum { @Null                    }
    named @IntroStartEvenTop  right @PageNum { @Null                    }
    named @IntroStartEvenFoot right @PageNum { @Null                    }

    named @RunningOddTop
	named @MajorNum {} named @MajorTitle {}
	named @MinorNum {} named @MinorTitle {} right @PageNum
    { @I { @MinorNum @Sep @MinorTitle } @Right @B @PageNum }

    named @RunningOddFoot
	named @MajorNum {} named @MajorTitle {}
	named @MinorNum {} named @MinorTitle {} right @PageNum
    { @Null }

    named @RunningEvenTop
	named @MajorNum {} named @MajorTitle {}
	named @MinorNum {} named @MinorTitle {} right @PageNum
    { @B @PageNum @Right @I { @MajorNum @Sep @MajorTitle } }

    named @RunningEvenFoot
	named @MajorNum {} named @MajorTitle {}
	named @MinorNum {} named @MinorTitle {} right @PageNum
    { @Null }

    named @RunningStartOddTop
	named @MajorNum {} named @MajorTitle {}
	named @MinorNum {} named @MinorTitle {} right @PageNum
    { @Null }

    named @RunningStartOddFoot
	named @MajorNum {} named @MajorTitle {}
	named @MinorNum {} named @MinorTitle {} right @PageNum
    { @Centre { Bold 0.8f } @Font @PageNum }

    named @RunningStartEvenTop
	named @MajorNum {} named @MajorTitle {}
	named @MinorNum {} named @MinorTitle {} right @PageNum
    { @Null }

    named @RunningStartEvenFoot
	named @MajorNum {} named @MajorTitle {}
	named @MinorNum {} named @MinorTitle {} right @PageNum
    { @Centre { Bold 0.8f } @Font @PageNum }


    named @RunningIntroOddTop
	named @MajorNum {} named @MajorTitle {}
	named @MinorNum {} named @MinorTitle {} right @PageNum
    { @Null }

    named @RunningIntroOddFoot
	named @MajorNum {} named @MajorTitle {}
	named @MinorNum {} named @MinorTitle {} right @PageNum
    { @Right @PageNum  }

    named @RunningIntroEvenTop
	named @MajorNum {} named @MajorTitle {}
	named @MinorNum {} named @MinorTitle {} right @PageNum
    { @Null }

    named @RunningIntroEvenFoot
	named @MajorNum {} named @MajorTitle {}
	named @MinorNum {} named @MinorTitle {} right @PageNum
    { @PageNum }

    named @RunningIntroStartOddTop
	named @MajorNum {} named @MajorTitle {}
	named @MinorNum {} named @MinorTitle {} right @PageNum
    { @Null }

    named @RunningIntroStartOddFoot
	named @MajorNum {} named @MajorTitle {}
	named @MinorNum {} named @MinorTitle {} right @PageNum
    { @Null }

    named @RunningIntroStartEvenTop
	named @MajorNum {} named @MajorTitle {}
	named @MinorNum {} named @MinorTitle {} right @PageNum
    { @Null }

    named @RunningIntroStartEvenFoot
	named @MajorNum {} named @MajorTitle {}
	named @MinorNum {} named @MinorTitle {} right @PageNum
    { @Null }


@Begin


    ###########################################################################
    #                                                                         #
    #  @Protect x                                                             #
    #                                                                         #
    #  Like @CNP, this reserves space on the current page or else makes sure  #
    #  x appears on the following page.  Lookahead is proportional to font    #
    #  size.                                                                  #
    #                                                                         #
    ###########################################################################

    def @Protect right x { 3.0f @High //0io // x }


    ###########################################################################
    #                                                                         #
    #   @HLine                                                                #
    #                                                                         #
    #   Draws a horizontal line to fill available space.                      #
    #                                                                         #
    ###########################################################################

    def @HLine
    {
	@BackEnd @Case {
	   PlainText @Yield { "-" @PlainGraphic 1f @High }
	   PostScript @Yield { {0 0 moveto xsize 0 lineto stroke} @Graphic {} }
	   PDF @Yield { {0 0 m __xsize 0 l S} @Graphic {} }
	}
    }


    ###########################################################################
    #                                                                         #
    #  x @WordVal y                                                           #
    #                                                                         #
    #  Returns @Word&&x if x == y, otherwise y.                               #
    #                                                                         #
    ###########################################################################

    def @WordVal
	left x
	right y
    {
	y @Case {
	    x    @Yield @Word&&x
	    else @Yield y
	}
    }

    ###########################################################################
    #                                                                         #
    #  x @Dft y                                                               #
    #                                                                         #
    #  This returns x unless its value is "dft", in which case it returns y.  #
    #  Useful for defaulting the value of one parameter to another.           #
    #                                                                         #
    ###########################################################################

    def @Dft
	left x
	right y
    {
	x @Case {
	    dft  @Yield y
	    else @Yield x
	}
    }


    ###########################################################################
    #                                                                         #
    #  x @Do y                                                                #
    #                                                                         #
    #  This returns @Null if x is No or None, otherwise y.                    #
    #                                                                         #
    ###########################################################################

    def @Do
	left x
	right y
    {
	x @Case {
	    { No None } @Yield @Null
	    else        @Yield y
	}
    }


    ###########################################################################
    #                                                                         #
    #  x @NoDo y                                                              #
    #                                                                         #
    #  Negation of @Do: This returns y if x is No or None, otherwise @Null.   #
    #                                                                         #
    ###########################################################################

    def @NoDo
	left x
	right y
    {
	x @Case {
	    { No None } @Yield y
	    else        @Yield @Null
	}
    }


    ###########################################################################
    #                                                                         #
    #  x @Then y                                                              #
    #                                                                         #
    #  This returns the empty object if x is No or None, otherwise y.         #
    #                                                                         #
    ###########################################################################

    def @Then
	left x
	right y
    {
	x @Case {
	    { No None } @Yield {}
	    else        @Yield y
	}
    }


    ###########################################################################
    #                                                                         #
    #  x @NoThen y                                                            #
    #                                                                         #
    #  Negation of @Then: returns y if x is No or None, otherwise empty.      #
    #                                                                         #
    ###########################################################################

    def @NoThen
	left x
	right y
    {
	x @Case {
	    { No None } @Yield y
	    else        @Yield {}
	}
    }


    ###########################################################################
    #                                                                         #
    #  Number markers.                                                        #
    #                                                                         #
    ###########################################################################

    def @Num
	left numtype
	right num
    {
	numtype @Case {
	    None    @Yield {}
	    Arabic  @Yield num
	    Roman   @Yield @Roman&&num
	    UCRoman @Yield @UCRoman&&num
	    Alpha   @Yield @Alpha&&num
	    UCAlpha @Yield @UCAlpha&&num
	}
    }


    ###########################################################################
    #                                                                         #
    #   @MakePageNum                                                          #
    #                                                                         #
    #   Make a page number.                                                   #
    #                                                                         #
    ###########################################################################

    def @MakePageNum
	named numbers {}
	named rawnum {}
	named prefix {}
	named owner {}
    {
	def @OwnerNum { @PageMarker&&owner @Open { rawnum } }

	def @StructNum { @FirstPageNumber @Plus rawnum @Minus @OwnerNum }

	@PageHeaders.@StructPageNums @Case {
	    { Titles.Yes NoTitles.Yes } @Yield {
		prefix @Join { numbers @Num @StructNum } }
	    else @Yield { numbers @Num rawnum }
	}
    }


    ###########################################################################
    #                                                                         #
    #  Page size, margins, and boxes.  This code culminates in @OddPage x     #
    #  and @EvenPage x, which produce one odd or even page containing x.      #
    #                                                                         #
    ###########################################################################

    def @Width
    {
	@PageType @Case {
	    Letter      @Yield  612p
	    Tabloid     @Yield  792p
	    Ledger      @Yield 1224p
	    Legal       @Yield  612p
	    Statement   @Yield  396p
	    Executive   @Yield  540p
	    A3          @Yield  842p
	    A4          @Yield  595p
	    A5          @Yield  420p
	    B4          @Yield  729p
	    B5          @Yield  516p
	    Folio       @Yield  612p
	    Quarto      @Yield  610p
	    10x14       @Yield  720p
	    Other	@Yield @PageWidth
	}
    }

    def @Height
    {
	@PageType @Case {
	    Letter      @Yield  792p
	    Tabloid     @Yield 1224p
	    Ledger      @Yield  792p
	    Legal       @Yield 1008p
	    Statement   @Yield  612p
	    Executive   @Yield  720p
	    A3          @Yield 1190p
	    A4          @Yield  842p
	    A5          @Yield  595p
	    B4          @Yield 1032p
	    B5          @Yield  729p
	    Folio       @Yield  936p
	    Quarto      @Yield  780p
	    10x14       @Yield 1008p
	    Other       @Yield @PageHeight
	}
    }

    def @OrientedWidth right @Orient
    {
	@Orient @Case {
	    { Portrait ReversePortrait }   @Yield @Width
	    { Landscape ReverseLandscape } @Yield @Height
	}
    }

    def @OrientedHeight right @Orient
    {
	@Orient @Case {
	    { Portrait ReversePortrait }   @Yield @Height
	    { Landscape ReverseLandscape } @Yield @Width
	}
    }

    def @OrientationAngle right @Orient
    {
	@Orient @Case {
	    Portrait         @Yield 0d
	    Landscape        @Yield 90d
	    ReversePortrait  @Yield 180d
	    ReverseLandscape @Yield 270d
	}
    }

    def @PageBox right x
    {
	@PageBoxType @Case {
	    None      @Yield x
	    Box       @Yield @Box
			margin { @PageBoxMargin }
			paint { @PageBoxPaint }
			linewidth { @PageBoxLineWidth } x
	    CurveBox  @Yield @CurveBox
			margin { @PageBoxMargin }
			paint { @PageBoxPaint }
			linewidth { @PageBoxLineWidth } x
	    ShadowBox @Yield @ShadowBox
			margin { @PageBoxMargin }
			paint { @PageBoxPaint }
			linewidth { @PageBoxLineWidth }
			shadow { @PageBoxShadow } x
	}
    }

    def @PageSet right x
    {	
#     "LoutPageSet" @Graphic	# VT: case PDF produces nothing
      { @BackEnd @Case {
          PostScript @Yield "LoutPageSet"
          else @Yield "% @DoBackground/LoutPageSet UNIMPLEMENTED"
        }
      } @Graphic x
    }

    def @MargSet
	left parity
	right x
    {
#	{ parity "LoutMargSet" } @Graphic x	# VT: case PDF produces nothing
	{ @BackEnd @Case {
	    PostScript @Yield { parity "LoutMargSet" }
	    else @Yield "% @MargSet/LoutMargSet UNIMPLEMENTED"
	  }
	} @Graphic x
    }

    def @OddPage
	left extra
	named @Orient {}
	right x
    {
	@PageSet
	{ @OrientationAngle @Orient } @Rotate
	{ @OrientedWidth @Orient } @Wide { @OrientedHeight @Orient } @High
	{   //@TopMargin ||@OddLeftMargin
		{ // || @PageBackground } @Background
	        # 1 @MargSet
		@PageEnclose @PageBox @HExpand { extra // @VExpand x }
	    ||@OddRightMargin //@FootMargin
	}
    }

    def @EvenPage
	left extra
	named @Orient {}
	right x
    {
	@PageSet
	{ @OrientationAngle @Orient } @Rotate
	{ @OrientedWidth @Orient } @Wide { @OrientedHeight @Orient } @High
	{   //@TopMargin ||@EvenLeftMargin
		{ // || @PageBackground } @Background
	        # 0 @MargSet
		@PageEnclose @PageBox @HExpand { extra // @VExpand x }
	    ||@EvenRightMargin //@FootMargin
	}
    }


    ###########################################################################
    #                                                                         #
    #  Definitions for page headers and footers.  There are 16 symbols here,  #
    #  in the following pattern:                                              #
    #                                                                         #
    #     @(- | Running)(- | Intro)(Odd | Even)(Top | Foot)Header             #
    #                                                                         #
    #  Running means that running headers are to be used.                     #
    #  Intro means that the header is destined for an introductory page.      #
    #  Odd or Even means whether the page number will be odd or even.         #
    #  Top or Foot means whether the header is for the top or foot of page.   #
    #                                                                         #
    ###########################################################################

    export @Start @MajorNum @MajorTitle @MinorNum @MinorTitle @Owner @Prefix
    def @Runner
	left  @Start
	named @MajorNum   {}
	named @MajorTitle {}
	named @MinorNum   {}
	named @MinorTitle {}
	named @Owner      {}
	named @Prefix     {}
	named @Tag        {}
    { @Null
    }

    def @DupRunner # duplicate previous runner
    {
	@Runner&&preceding @Open {
	    NonStart @Runner
		@MajorNum { @MajorNum }
		@MajorTitle { @MajorTitle }
		@MinorNum { @MinorNum }
		@MinorTitle { @MinorTitle }
		@Owner { @Owner }
		@Prefix { @Prefix }
	}
    }

    def @OddTopHeader
	left @PageHeadersAndStart
	right @PageNum
    {
	@PageHeadersAndStart @Case {
	    None.Start      @Yield @Null
	    None.NonStart   @Yield @Null
	    None.None       @Yield @Null
	    Simple.Start    @Yield @StartOddTop @PageNum
	    Simple.NonStart @Yield @OddTop @PageNum
	    Simple.None     @Yield @Null
	}
    }

    def @OddFootHeader
	left @PageHeadersAndStart
	right @PageNum
    {
	@PageHeadersAndStart @Case {
	    None.Start      @Yield @Null
	    None.NonStart   @Yield @Null
	    None.None       @Yield @Null
	    Simple.Start    @Yield @StartOddFoot @PageNum
	    Simple.NonStart @Yield @OddFoot @PageNum
	    Simple.None     @Yield @Null
	}
    }

    def @EvenTopHeader
	left @PageHeadersAndStart
	right @PageNum
    {
	@PageHeadersAndStart @Case {
	    None.Start      @Yield @Null
	    None.NonStart   @Yield @Null
	    None.None       @Yield @Null
	    Simple.Start    @Yield @StartEvenTop @PageNum
	    Simple.NonStart @Yield @EvenTop @PageNum
	    Simple.None     @Yield @Null
	}
    }

    def @EvenFootHeader
	left @PageHeadersAndStart
	right @PageNum
    {
	@PageHeadersAndStart @Case {
	    None.Start      @Yield @Null
	    None.NonStart   @Yield @Null
	    None.None       @Yield @Null
	    Simple.Start    @Yield @StartEvenFoot @PageNum
	    Simple.NonStart @Yield @EvenFoot @PageNum
	    Simple.None     @Yield @Null
	}
    }

    def @IntroOddTopHeader
	left @PageHeadersAndStart
	right @PageNum
    {
	@PageHeadersAndStart @Case {
	    None.Start      @Yield @Null
	    None.NonStart   @Yield @Null
	    None.None       @Yield @Null
	    Simple.Start    @Yield @IntroStartOddTop @PageNum
	    Simple.NonStart @Yield @IntroOddTop @PageNum
	    Simple.None     @Yield @Null
	}
    }

    def @IntroOddFootHeader
	left @PageHeadersAndStart
	right @PageNum
    {
	@PageHeadersAndStart @Case {
	    None.Start      @Yield @Null
	    None.NonStart   @Yield @Null
	    None.None       @Yield @Null
	    Simple.Start    @Yield @IntroStartOddFoot @PageNum
	    Simple.NonStart @Yield @IntroOddFoot @PageNum
	    Simple.None     @Yield @Null
	}
    }

    def @IntroEvenTopHeader
	left @PageHeadersAndStart
	right @PageNum
    {
	@PageHeadersAndStart @Case {
	    None.Start      @Yield @Null
	    None.NonStart   @Yield @Null
	    None.None       @Yield @Null
	    Simple.Start    @Yield @IntroStartEvenTop @PageNum
	    Simple.NonStart @Yield @IntroEvenTop @PageNum
	    Simple.None     @Yield @Null
	}
    }

    def @IntroEvenFootHeader
	left @PageHeadersAndStart
	right @PageNum
    {
	@PageHeadersAndStart @Case {
	    None.Start      @Yield @Null
	    None.NonStart   @Yield @Null
	    None.None       @Yield @Null
	    Simple.Start    @Yield @IntroStartEvenFoot @PageNum
	    Simple.NonStart @Yield @IntroEvenFoot @PageNum
	    Simple.None     @Yield @Null
	}
    }


    def @RunningOddTopHeader
	left @PageHeadersAndStart
	named @MajorNum   {}
	named @MajorTitle {}
	named @MinorNum   {}
	named @MinorTitle {}
	right @PageNum
    {
	@PageHeadersAndStart @Case {
	    NoTitles.??       @Yield ??
	    NoTitles.Start    @Yield @RunningStartOddTop @PageNum
	    NoTitles.NonStart @Yield @RunningOddTop @PageNum
	    NoTitles.None     @Yield @Null
	    Titles.??         @Yield ??
	    Titles.Start      @Yield @RunningStartOddTop
		    @MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
		    @MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
		    @PageNum
	    Titles.NonStart   @Yield @RunningOddTop
		    @MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
		    @MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
		    @PageNum
	    Titles.None	      @Yield @Null
	}
    }

    def @RunningOddFootHeader
	left @PageHeadersAndStart
	named @MajorNum   {}
	named @MajorTitle {}
	named @MinorNum   {}
	named @MinorTitle {}
	right @PageNum
    {
	@PageHeadersAndStart @Case {
	    NoTitles.??       @Yield @Null
	    NoTitles.Start    @Yield @RunningStartOddFoot @PageNum
	    NoTitles.NonStart @Yield @RunningOddFoot @PageNum
	    NoTitles.None     @Yield @Null
	    Titles.??         @Yield @Null
	    Titles.Start      @Yield @RunningStartOddFoot
		    @MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
		    @MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
		    @PageNum
	    Titles.NonStart   @Yield @RunningOddFoot
		    @MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
		    @MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
		    @PageNum
	    Titles.None	      @Yield @Null
	}
    }

    def @RunningEvenTopHeader
	left @PageHeadersAndStart
	named @MajorNum   {}
	named @MajorTitle {}
	named @MinorNum   {}
	named @MinorTitle {}
	right @PageNum
    {
	@PageHeadersAndStart @Case {
	    NoTitles.??       @Yield ??
	    NoTitles.Start    @Yield @RunningStartEvenTop @PageNum
	    NoTitles.NonStart @Yield @RunningEvenTop @PageNum
	    NoTitles.None     @Yield @Null
	    Titles.??         @Yield ??
	    Titles.Start      @Yield @RunningStartEvenTop
		    @MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
		    @MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
		    @PageNum
	    Titles.NonStart   @Yield @RunningEvenTop
		    @MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
		    @MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
		    @PageNum
	    Titles.None	      @Yield @Null
	}
    }

    def @RunningEvenFootHeader
	left @PageHeadersAndStart
	named @MajorNum   {}
	named @MajorTitle {}
	named @MinorNum   {}
	named @MinorTitle {}
	right @PageNum
    {
	@PageHeadersAndStart @Case {
	    NoTitles.??       @Yield @Null
	    NoTitles.Start    @Yield @RunningStartEvenFoot @PageNum
	    NoTitles.NonStart @Yield @RunningEvenFoot @PageNum
	    NoTitles.None     @Yield @Null
	    Titles.??         @Yield @Null
	    Titles.Start      @Yield @RunningStartEvenFoot
		    @MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
		    @MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
		    @PageNum
	    Titles.NonStart   @Yield @RunningEvenFoot
		    @MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
		    @MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
		    @PageNum
	    Titles.None	      @Yield @Null
	}
    }

    def @RunningIntroOddTopHeader
	left @PageHeadersAndStart
	named @MajorNum   {}
	named @MajorTitle {}
	named @MinorNum   {}
	named @MinorTitle {}
	right @PageNum
    {
	@PageHeadersAndStart @Case {
	    NoTitles.??       @Yield ??
	    NoTitles.Start    @Yield @RunningIntroStartOddTop @PageNum
	    NoTitles.NonStart @Yield @RunningIntroOddTop @PageNum
	    NoTitles.None     @Yield @Null
	    Titles.??         @Yield ??
	    Titles.Start      @Yield @RunningIntroStartOddTop
		    @MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
		    @MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
		    @PageNum
	    Titles.NonStart   @Yield @RunningIntroOddTop
		    @MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
		    @MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
		    @PageNum
	    Titles.None	      @Yield @Null
	}
    }

    def @RunningIntroOddFootHeader
	left @PageHeadersAndStart
	named @MajorNum   {}
	named @MajorTitle {}
	named @MinorNum   {}
	named @MinorTitle {}
	right @PageNum
    {
	@PageHeadersAndStart @Case {
	    NoTitles.??       @Yield @Null
	    NoTitles.Start    @Yield @RunningIntroStartOddFoot @PageNum
	    NoTitles.NonStart @Yield @RunningIntroOddFoot @PageNum
	    NoTitles.None     @Yield @Null
	    Titles.??         @Yield @Null
	    Titles.Start      @Yield @RunningIntroStartOddFoot
		    @MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
		    @MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
		    @PageNum
	    Titles.NonStart   @Yield @RunningIntroOddFoot
		    @MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
		    @MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
		    @PageNum
	    Titles.None	      @Yield @Null
	}
    }

    def @RunningIntroEvenTopHeader
	left @PageHeadersAndStart
	named @MajorNum   {}
	named @MajorTitle {}
	named @MinorNum   {}
	named @MinorTitle {}
	right @PageNum
    {
	@PageHeadersAndStart @Case {
	    NoTitles.??       @Yield ??
	    NoTitles.Start    @Yield @RunningIntroStartEvenTop @PageNum
	    NoTitles.NonStart @Yield @RunningIntroEvenTop @PageNum
	    NoTitles.None     @Yield @Null
	    Titles.??         @Yield ??
	    Titles.Start      @Yield @RunningIntroStartEvenTop
		    @MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
		    @MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
		    @PageNum
	    Titles.NonStart   @Yield @RunningIntroEvenTop
		    @MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
		    @MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
		    @PageNum
	    Titles.None	      @Yield @Null
	}
    }

    def @RunningIntroEvenFootHeader
	left @PageHeadersAndStart
	named @MajorNum   {}
	named @MajorTitle {}
	named @MinorNum   {}
	named @MinorTitle {}
	right @PageNum
    {
	@PageHeadersAndStart @Case {
	    NoTitles.??       @Yield @Null
	    NoTitles.Start    @Yield @RunningIntroStartEvenFoot @PageNum
	    NoTitles.NonStart @Yield @RunningIntroEvenFoot @PageNum
	    NoTitles.None     @Yield @Null
	    Titles.??         @Yield @Null
	    Titles.Start      @Yield @RunningIntroStartEvenFoot
		    @MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
		    @MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
		    @PageNum
	    Titles.NonStart   @Yield @RunningIntroEvenFoot
		    @MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
		    @MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
		    @PageNum
	    Titles.None	      @Yield @Null
	}
    }


    ###########################################################################
    #                                                                         #
    #  Helper definitions for laying out pages.                               #
    #                                                                         #
    ###########################################################################

    def @PageTopPlace		{ @Galley }
    def @PageFootAndTopPlace	{ @Galley }
    def @PageFootNotePlace	{ @Galley }
    def @FullPlace		{ @Galley }
    def @OddFullPlace		{ @Galley }
    def @EvenFullPlace		{ @Galley }
    def @FullPagePlace		{ @Galley }
    def @EvenFullPagePlace	{ @Galley }
    def @EvenPagePlace		{ @Galley }
    def @OddFullPagePlace	{ @Galley }
    def @ColTopPlace		{ @Galley }
    def @ColFootAndTopPlace	{ @Galley }
    def @ColPlace		{ @Galley }
    def @ColFootNotePlace	{ @Galley }
    def @IntroFullPlace		{ @Galley }
    def @IntroOddFullPlace	{ @Galley }
    def @IntroEvenFullPlace	{ @Galley }
    def @IntroColPlace		{ @Galley }
    def @IndexPlace		{ @Galley }
    def @IndexAPlace		{ @Galley }
    def @IndexBPlace		{ @Galley }
    def @AfterLinePlace		{ @ForceGalley }

    def @TryAfterLinePlace right x
    {
	x @Case {
	    noforce @Yield @Galley
	    force   @Yield @ForceGalley
	}
    }

    def @EvenFullPageSection
    {
		  @OneRow @EvenFullPagePlace
	//	  @FullPagePlace
	//@MidGap @EvenFullPageSection
    }

    def @OddFullPageSection
    {
		  @OneRow @OddFullPagePlace
	//	  @FullPagePlace
	//@MidGap @OddFullPageSection
    }

    def @EvenPageTopSect
    {
		  @OneRow @EvenPagePlace
	//	  @PageTopPlace
	//@MidGap @PageFootAndTopPlace
	//@MidGap @EvenPageTopSect
    }

    def @OddPageTopSect
    {
		  @PageTopPlace
	//@MidGap @PageFootAndTopPlace
	//@MidGap @OddPageTopSect
    }

    def @PageOddTopSection right @Orient
    {
	@OddPageTopSect ||{@OrientedWidth @Orient} @FullPlace
			||{@OrientedWidth @Orient} @OddFullPlace
    }

    def @PageEvenTopSection right @Orient
    {
	@EvenPageTopSect ||{@OrientedWidth @Orient} @FullPlace
			 ||{@OrientedWidth @Orient} @EvenFullPlace
    }

    def @PageIntroOddTopSection right @Orient
    {
	@OddPageTopSect ||{@OrientedWidth @Orient} @IntroFullPlace
			||{@OrientedWidth @Orient} @IntroOddFullPlace
    }

    def @PageIntroEvenTopSection right @Orient
    {
	@EvenPageTopSect
	||{@OrientedWidth @Orient} @IntroFullPlace
	||{@OrientedWidth @Orient} @IntroEvenFullPlace
    }

    def @PageFootNoteList
    {
		    @PageFootNotePlace
	//@FootGap  @PageFootNoteList
    }

    def @PageFootNoteSection
    {
	            @FootLen @Wide @HLine
	//@FootGap  @PageFootNoteList
    }

    def @PageFootAndTopSect
    {
		  @PageFootAndTopPlace
	//@MidGap @PageFootAndTopSect
    }

    def @PageFootSection
    {
	//@MidGap       @PageFootAndTopSect
	//@FootAboveGap @PageFootNoteSection
    }

    def @ColTopSection
    {
		  @ColTopPlace
	//@MidGap @ColFootAndTopPlace
	//@MidGap @TryAfterLinePlace noforce
	//@MidGap @ColTopSection
    }

    def @RestOfColSection
    {
	          @AfterLinePlace
	//@MidGap @TryAfterLinePlace force
	//@MidGap @ColPlace @NotRevealed
	//@MidGap @RestOfColSection
    }

    def @IntroRestOfColSection
    {
	          @AfterLinePlace
	//@MidGap @TryAfterLinePlace force
	//@MidGap @IntroColPlace @NotRevealed
	//@MidGap @IntroRestOfColSection
    }

    def @ColFootAndTopList { @ColFootAndTopPlace //@TopGap @ColFootAndTopList }

    def @ColFootNoteList
    {
		    @ColFootNotePlace
	//@FootGap  @ColFootNoteList
    }

    def @ColFootNoteSection
    {
	           @FootLen @Wide @HLine
	//@FootGap @ColFootNoteList
    }

    def @ColFootSection
    {
	//@TopGap       @ColFootAndTopList
	//@FootAboveGap @ColFootNoteSection
    }

    def @ColsOf
	left num
	named gap { @ColumnGap }
	right x
    {
	def @Two { x ||gap x }
	def @Four { @Two ||gap @Two }
	def @Eight { @Four ||gap @Four }

	num @Case {
	    1  @Yield { x				}
	    2  @Yield { @Two				}
	    3  @Yield { @Two  ||gap x			}
	    4  @Yield { @Four				}
	    5  @Yield { @Four ||gap x			}
	    6  @Yield { @Four ||gap @Two		}
	    7  @Yield { @Four ||gap @Two  ||gap x	}
	    8  @Yield { @Four ||gap @Four		}
	    9  @Yield { @Four ||gap @Four ||gap x	}
	   10  @Yield { @Four ||gap @Four ||gap @Two	}
	}
    }

    def @EqualWidth right x { 50c @Wide x }	# believe it or not

    def @ColList right num
    {
	@HExpand num @ColsOf @EqualWidth @VExpand
	{
	    @ColTopSection //@TopGap
	    @ColPlace //@MidGap @RestOfColSection // //1rt
	    @OneRow { @ColFootSection }

	}
    }
    
    def @IntroColList right num
    {
	@HExpand num @ColsOf @EqualWidth @VExpand
	{
	    @ColTopSection //@TopGap
	    @IntroColPlace //@MidGap @IntroRestOfColSection // //1rt
	    @OneRow { @ColFootSection }
	}
    }
    
    def @ZeroColList right num
    {
	@HExpand num @ColsOf @EqualWidth 0c @High @ColPlace
    }
    
    def @ZeroIntroColList right num
    {
	@HExpand num @ColsOf @EqualWidth 0c @High @IntroColPlace
    }
    
    def @IndexColList right num
    {
	@HExpand num @ColsOf gap { @IndexColumnGap } @EqualWidth @VExpand @IndexPlace
    }
    
    def @IndexAColList right num
    {
	@HExpand num @ColsOf gap { @IndexAColumnGap } @EqualWidth @VExpand @IndexAPlace
    }
    
    def @IndexBColList right num
    {
	@HExpand num @ColsOf gap { @IndexBColumnGap } @EqualWidth @VExpand @IndexBPlace
    }


    ###########################################################################
    #                                                                         #
    #  Footnotes.                                                             #
    #                                                                         #
    ###########################################################################

    export @Tag count
    def @FootNoteCounterMarker
	named @Tag {}
	named count {}
    {
	@Null
    }

    def @FootNoteNum right tag
    {
	@FootNoteCounterMarker&&tag @Open { @Next count }
    }

    def @FootNoteCounterIncrement
	right tag
    {
	   @FootNoteCounterMarker&&preceding @Tagged tag
	// @FootNoteCounterMarker count { @FootNoteNum tag }
	// @NumberMarker @Tag { tag }
		@Value { @FootNoteNumbers @Num @FootNoteNum tag }
    }

    def @BeginFootNoteCounter
    {
	@FootNoteCounterMarker count { 0 }
    }

    def @FootNote
	named @Tag {}
	named @Location { @FootNoteLocation }
	named @Another { No }
	named @Label { Numbered }
	right x
    {

	def @FootLabelFmt
	    right x
	{
	    @FootNoteFont @Font @FootNoteBreak @Break
	    +0.3v @VShift { Base 0.8f } @Font x
	}

	def @FootExtra
	{
            @BackEnd @Case {
	        PlainText @Yield ","
	        else @Yield @FootLabelFmt ","
            }
	}

	def @FootLabel
	{
	    @Label @Case {
		"Numbered" @Yield { @BackEnd @Case {
		    PlainText @Yield { ({@NumberOf @Tag}) }
		    else @Yield @FootLabelFmt @NumberOf @Tag
		} }
		else @Yield { @BackEnd @Case {
		    PlainText @Yield @Label
		    else @Yield @FootLabelFmt @Label
		} }
            }
	}

	def @LongFootLabel
	{
	    @Another @Case {
		No  @Yield {                 @FootLabel }
		Yes @Yield { @FootExtra &0iu @FootLabel }
	    }
	}

	def @FootVal
	{
	    @FootNoteFont @Font @FootNoteBreak @Break @Label @Case {
		"Numbered" @Yield {
		    { @FootNoteCounterIncrement @Tag & @FootLabel }
		      @FootNoteFormat x
		}
		else @Yield { @FootLabel @FootNoteFormat x }
	    }
	}

	def @PageFootNote into { @PageFootNotePlace&&following } { @FootVal }
	def @ColFootNote  into { @ColFootNotePlace&&following  } { @FootVal }

	@Location @Case {
	    ColFoot  @Yield { @Null &0iu @LongFootLabel & @ColFootNote  }
	    PageFoot @Yield { @Null &0iu @LongFootLabel & @PageFootNote }
	}
    }

    macro @AnotherFootNote { @FootNote @Another { Yes } }


    ###########################################################################
    #                                                                         #
    #  Definitions for page lists.  There are four symbols here, in the       #
    #  following pattern:                                                     #
    #                                                                         #
    #    @(Simple | Running)(- | Intro)PageList                               #
    #                                                                         #
    #  Running means that the page list is to support running headers.        #
    #  Intro means that the page list is an introductory page list.           #
    #  These are then packaged into @PageList and @IntroPageList.             #
    #                                                                         #
    ###########################################################################

    def @SStart right @PageNum
    {
	@PageNum @Case {
	    { 1 0 } @Yield Start
	    else    @Yield NonStart
	}
    }

    def @ChooseColList right colnum
    {
	@OneOf
	{
	    @ColList colnum
	    @IndexAColList @IndexAColumnNumber
	    @IndexBColList @IndexBColumnNumber
	    @IndexColList  @IndexColumnNumber
	}
    }

    def @ChooseIntroColList right colnum
    {
	@OneOf
	{
	    @IntroColList colnum
	    @IndexAColList @IndexAColumnNumber
	    @IndexBColList @IndexBColumnNumber
	    @IndexColList  @IndexColumnNumber
	}
    }

    def @OddBodyMargins right x
    {
	@OddLeftBodyMargin @Wide {} || 1 @MargSet x || @OddRightBodyMargin @Wide {}
    }

    def @EvenBodyMargins right x
    {
	@EvenLeftBodyMargin @Wide {} || 0 @MargSet x || @EvenRightBodyMargin @Wide {}
    }

    def @SimplePageList
	named @ColumnNumber {}
	named @PageHeaders {}
	named extra { No }
	named @Orient {}
	named @AtTop { @Null }
	right @PageNum
    {

	def @OrdinaryOddPage
	{
		{@PageHeaders.{@SStart @PageNum}} @OddTopHeader
		    { @PageNumbers @Num @PageNum }
		//@MidGap
		@OddBodyMargins {
			@AtTop
			//@MidGap @PageOddTopSection @Orient
			//@MidGap @ChooseColList @ColumnNumber
		}
		//1rt @OneRow
		{  //         @OddBodyMargins @PageFootSection
		   //@MidGap {@PageHeaders.{@SStart @PageNum}} @OddFootHeader
				 { @PageNumbers @Num @PageNum }
		}
	}

	def @FullPageOddPage
	{
		{@PageHeaders.{@SStart @PageNum}} @OddTopHeader
		    { @PageNumbers @Num @PageNum }
		//@MidGap @OddBodyMargins @OddFullPageSection
		//1rt @OneRow
		{ //@MidGap {@PageHeaders.{@SStart @PageNum}} @OddFootHeader
				 { @PageNumbers @Num @PageNum }
		}
	}

        def @SimpleEvenPageList
	    named @ColumnNumber {}
	    named @PageHeaders {}
	    named extra { No }
	    right @PageNum
        {

	    def @OrdinaryEvenPage
	    {
		@PageHeaders.NonStart @EvenTopHeader
		    { @PageNumbers @Num @PageNum }
		//@MidGap
		@EvenBodyMargins {
			@PageEvenTopSection @Orient
			//@MidGap @ChooseColList @ColumnNumber
		}
		//1rt @OneRow
		{  //        @EvenBodyMargins @PageFootSection
		   //@MidGap @PageHeaders.NonStart @EvenFootHeader
			     { @PageNumbers @Num @PageNum }
		}
	    }

	    def @FullPageEvenPage
	    {
		@PageHeaders.NonStart @EvenTopHeader
		    { @PageNumbers @Num @PageNum }
		//@MidGap @EvenBodyMargins @EvenFullPageSection
		//1rt @OneRow
		{ //@MidGap @PageHeaders.NonStart @EvenFootHeader
			     { @PageNumbers @Num @PageNum }
		}
	    }

	        @PageMarker
		    rawnum { @PageNum }
		    num { @PageNumbers @Num @PageNum }
	    //  @FootNoteThrough @NoDo @BeginFootNoteCounter
	    //  {} @EvenPage @Orient { @Orient }
	        {
		    @OrdinaryEvenPage ||{@OrientedWidth @Orient} @FullPageEvenPage
	        }
	    //  @SimplePageList
		    @ColumnNumber { @ColumnNumber }
		    @PageHeaders { @PageHeaders }
		    @Orient { @Orient }
		@Next @PageNum
        }

	    @PageMarker
		rawnum { @PageNum }
		num { @PageNumbers @Num @PageNum }
	//  @FootNoteThrough @NoDo @BeginFootNoteCounter
	//  { extra @Then @OddBodyMargins @ZeroColList @ColumnNumber } @OddPage @Orient { @Orient }
	    {
		@OrdinaryOddPage ||{@OrientedWidth @Orient} @FullPageOddPage
	    }
	//  @SimpleEvenPageList
		@ColumnNumber { @ColumnNumber }
		@PageHeaders { @PageHeaders }
	    @Next @PageNum
    }

    def @SimpleIntroPageList
	named @ColumnNumber {}
	named @PageHeaders {}
	named @Orient {}
	named extra { No }
	named @AtTop { @Null }
	right @PageNum
    {
	    @PageMarker
		num { @IntroPageNumbers @Num @PageNum }
		rawnum { @PageNum }
	//  @FootNoteThrough @NoDo @BeginFootNoteCounter
	//  { extra @Then @OddBodyMargins @ZeroIntroColList @ColumnNumber } @OddPage @Orient { @Orient }
	    {
		{@PageHeaders.{@SStart @PageNum}} @IntroOddTopHeader
		    { @IntroPageNumbers @Num @PageNum }
		//@MidGap
		@OddBodyMargins {
			@AtTop
			//@MidGap @PageIntroOddTopSection @Orient
			//@MidGap @ChooseIntroColList @ColumnNumber
		}
		//1rt @OneRow
		{  //        @OddBodyMargins @PageFootSection
		   //@MidGap
		       {@PageHeaders.{@SStart @PageNum}} @IntroOddFootHeader
			   { @IntroPageNumbers @Num @PageNum }
		}
	    }
	//  @PageMarker
		num { @IntroPageNumbers @Num @Next @PageNum }
		rawnum { @Next @PageNum }
	//  @FootNoteThrough @NoDo @BeginFootNoteCounter
	//  {} @EvenPage @Orient { @Orient }
	    @Runner&&following @Open
	    {
		@PageHeaders.NonStart @IntroEvenTopHeader { @IntroPageNumbers @Num @Next @PageNum }
		//@MidGap
		@EvenBodyMargins {
			@PageIntroEvenTopSection @Orient
			//@MidGap @ChooseIntroColList @ColumnNumber
		}
		//1rt @OneRow
		{  //        @EvenBodyMargins @PageFootSection
		   //@MidGap @PageHeaders.NonStart @IntroEvenFootHeader
				{ @IntroPageNumbers @Num @Next @PageNum }
		}
	    }
	//  @SimpleIntroPageList
		@ColumnNumber { @ColumnNumber }
		@PageHeaders { @PageHeaders }
		@Orient { @Orient }
	    @Next @Next @PageNum
    }

    def @SimpleOddOrEvenIntroPageList
	named @ColumnNumber {}
	named @PageHeaders {}
	named @Orient {}
	named extra { No }
	named @AtTop { @Null }
	right @PageNum
    {

        def @SimpleEvenIntroPageList
	    named @ColumnNumber {}
	    named @PageHeaders {}
	    named @Orient {}
	    named extra { No }
	    named @AtTop { @Null }
	    right @PageNum
       {

	    @PageMarker
		num { @IntroPageNumbers @Num @PageNum }
		rawnum { @PageNum }
	 // @FootNoteThrough @NoDo @BeginFootNoteCounter
	 // {} @EvenPage @Orient { @Orient }
	    @Runner&&following @Open
	    {
		@PageHeaders.NonStart @IntroEvenTopHeader { @IntroPageNumbers @Num @PageNum }
		//@MidGap
		@EvenBodyMargins {
			@PageIntroEvenTopSection @Orient
			//@MidGap @ChooseIntroColList @ColumnNumber
		}
		//1rt @OneRow
		{  //        @EvenBodyMargins @PageFootSection
		   //@MidGap @PageHeaders.NonStart @IntroEvenFootHeader
				{ @IntroPageNumbers @Num @PageNum }
		}
	    }
	 // @SimpleOddOrEvenIntroPageList
		@ColumnNumber { @ColumnNumber }
		@PageHeaders { @PageHeaders }
		@Orient { @Orient }
	    @Next @PageNum
       }
	    @PageMarker
		num { @IntroPageNumbers @Num @PageNum }
		rawnum { @PageNum }
	//  @FootNoteThrough @NoDo @BeginFootNoteCounter
	//  { extra @Then @OddBodyMargins @ZeroIntroColList @ColumnNumber } @OddPage @Orient { @Orient }
	    {
		{@PageHeaders.{@SStart @PageNum}} @IntroOddTopHeader
		    { @IntroPageNumbers @Num @PageNum }
		//@MidGap
		@OddBodyMargins {
			@AtTop
			//@MidGap @PageIntroOddTopSection @Orient
			//@MidGap @ChooseIntroColList @ColumnNumber
		}
		//1rt @OneRow
		{  //        @OddBodyMargins @PageFootSection
		   //@MidGap
		       {@PageHeaders.{@SStart @PageNum}} @IntroOddFootHeader
			   { @IntroPageNumbers @Num @PageNum }
		}
	    }
	//  @SimpleEvenIntroPageList
		@ColumnNumber { @ColumnNumber }
		@PageHeaders { @PageHeaders }
		@Orient { @Orient }
		@Next @PageNum
    }

    def @RunningPageList
	named @ColumnNumber {}
	named @PageHeaders {}
	named extra { No }
	named @Orient {}
	named @AtTop { @Null }
	right @PageNum
    {

	def @OrdinaryOddPage
	{
	    @Runner&&following @Open
	    {
		@PageMarker
		    num { @MakePageNum
				numbers { @PageNumbers }
				rawnum  { @PageNum }
				prefix  { @Prefix }
				owner   { @Owner } }
		    rawnum { @PageNum }
		// @PageHeaders.@Start @RunningOddTopHeader
		    @MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
		    @MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
		    {
			@MakePageNum
			    numbers { @PageNumbers }
			    rawnum  { @PageNum }
			    prefix  { @Prefix }
			    owner   { @Owner }
		    }
		//@MidGap
		@OddBodyMargins {
			@AtTop
			//@MidGap @PageOddTopSection @Orient
			//@MidGap @ChooseColList @ColumnNumber
		}
		//1rt @OneRow
		{  //        @OddBodyMargins @PageFootSection
		   //@MidGap @PageHeaders.@Start @RunningOddFootHeader
			@MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
			@MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
			{
			    @MakePageNum
				numbers { @PageNumbers }
				rawnum  { @PageNum }
				prefix  { @Prefix }
				owner   { @Owner }
			}
		}
	    }
	}

	def @FullPageOddPage
	{
	    @Runner&&following @Open
	    {
		@PageMarker
		    num { @MakePageNum
				numbers { @PageNumbers }
				rawnum  { @PageNum }
				prefix  { @Prefix }
				owner   { @Owner } }
		    rawnum { @PageNum }
		// @PageHeaders.@Start @RunningOddTopHeader
		    @MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
		    @MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
		    {
			@MakePageNum
			    numbers { @PageNumbers }
			    rawnum  { @PageNum }
			    prefix  { @Prefix }
			    owner   { @Owner }
		    }
		//@MidGap
		@OddBodyMargins {
			@AtTop
			//@MidGap @OddFullPageSection
		}
		//1rt @OneRow
		{
		   //@MidGap @PageHeaders.@Start @RunningOddFootHeader
			@MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
			@MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
			{
			    @MakePageNum
				numbers { @PageNumbers }
				rawnum  { @PageNum }
				prefix  { @Prefix }
				owner   { @Owner }
			}
		}
	    }
	}

        def @RunningEvenPageList
	    named @ColumnNumber {}
	    named @PageHeaders {}
	    right @PageNum
        {

	    def @OrdinaryEvenPage
	    {
	        @Runner&&following @Open
	        {
		    @PageMarker
			num { @MakePageNum
				numbers { @PageNumbers }
				rawnum  { @PageNum }
				prefix  { @Prefix }
				owner   { @Owner } }
			rawnum { @PageNum }
		    // @PageHeaders.@Start @RunningEvenTopHeader
			@MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
			@MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
			{
			    @MakePageNum
				numbers { @PageNumbers }
				rawnum  { @PageNum }
				prefix  { @Prefix }
				owner   { @Owner }
			}
		    //@MidGap
		    @EvenBodyMargins {
			@PageEvenTopSection @Orient
		    	//@MidGap @ChooseColList @ColumnNumber
		    }
		    //1rt @OneRow
		    {  //        @EvenBodyMargins @PageFootSection
		       //@MidGap @PageHeaders.@Start @RunningEvenFootHeader
			   @MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
			   @MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
			   {
				@MakePageNum
				    numbers { @PageNumbers }
				    rawnum  { @PageNum }
				    prefix  { @Prefix }
				    owner   { @Owner }
			   }
		    }
	        }
	    }

	    def @FullPageEvenPage
	    {
	        @Runner&&following @Open
	        {
		    @PageMarker
			num { @MakePageNum
				numbers { @PageNumbers }
				rawnum  { @PageNum }
				prefix  { @Prefix }
				owner   { @Owner } }
			rawnum { @PageNum }
		    // @PageHeaders.@Start @RunningEvenTopHeader
			@MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
			@MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
			{
			    @MakePageNum
				numbers { @PageNumbers }
				rawnum  { @PageNum }
				prefix  { @Prefix }
				owner   { @Owner }
			}
		    //@MidGap
		    @EvenBodyMargins @EvenFullPageSection
		    //1rt @OneRow
		    {
		       //@MidGap @PageHeaders.@Start @RunningEvenFootHeader
			   @MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
			   @MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
			   {
				@MakePageNum
				    numbers { @PageNumbers }
				    rawnum  { @PageNum }
				    prefix  { @Prefix }
				    owner   { @Owner }
			   }
		    }
	        }
	    }

		@FootNoteThrough @NoDo @BeginFootNoteCounter
	    //  {} @EvenPage @Orient { @Orient }
	        {
		    @OrdinaryEvenPage ||{@OrientedWidth @Orient} @FullPageEvenPage
	        }
	    //  @RunningPageList
		    @ColumnNumber { @ColumnNumber }
		    @PageHeaders { @PageHeaders }
		    @Orient { @Orient }
		@Next @PageNum
        }

	    @FootNoteThrough @NoDo @BeginFootNoteCounter
	//  { extra @Then @OddBodyMargins @ZeroColList @ColumnNumber } @OddPage @Orient { @Orient }
	    {
		@OrdinaryOddPage ||{@OrientedWidth @Orient} @FullPageOddPage
	    }
	//  @RunningEvenPageList
		@ColumnNumber { @ColumnNumber }
		@PageHeaders { @PageHeaders }
	    @Next @PageNum
    }

    def @RunningIntroPageList
	named @ColumnNumber {}
	named @PageHeaders {}
	named @AtTop { @Null }
	named @Orient {}
	named extra { No }
	right @PageNum
    {
	    @FootNoteThrough @NoDo @BeginFootNoteCounter
	//  { extra @Then @OddBodyMargins @ZeroIntroColList @ColumnNumber } @OddPage @Orient { @Orient }
	    @Runner&&following @Open
	    {
		@PageMarker
		    num { @MakePageNum
			    numbers { @IntroPageNumbers }
			    rawnum  { @PageNum }
			    prefix  { @Prefix }
			    owner   { @Owner } }
		    rawnum { @PageNum }
		// @PageHeaders.@Start @RunningIntroOddTopHeader
			@MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
			@MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
			{
			    @MakePageNum
				numbers { @IntroPageNumbers }
				rawnum  { @PageNum }
				prefix  { @Prefix }
				owner   { @Owner }
			}
		//@MidGap
		@OddBodyMargins {
			@AtTop
			//@MidGap @PageIntroOddTopSection @Orient
			//@MidGap @IntroColList @ColumnNumber
		}
		//1rt @OneRow
		{  //        @OddBodyMargins @PageFootSection
		   //@MidGap @PageHeaders.@Start @RunningIntroOddFootHeader
			@MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
			@MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
			{
			    @MakePageNum
				numbers { @IntroPageNumbers }
				rawnum  { @PageNum }
				prefix  { @Prefix }
				owner   { @Owner }
			}
		}
	    }
	//  @FootNoteThrough @NoDo @BeginFootNoteCounter
	//  {} @EvenPage @Orient { @Orient }
	    @Runner&&following @Open
	    {
		@PageMarker
		    num { @MakePageNum
			    numbers { @IntroPageNumbers }
			    rawnum  { @Next @PageNum }
			    prefix  { @Prefix }
			    owner   { @Owner } }
		    rawnum { @Next @PageNum }
		// @PageHeaders.@Start @RunningIntroEvenTopHeader
			@MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
			@MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
			{
			    @MakePageNum
				numbers { @IntroPageNumbers }
				rawnum  { @Next @PageNum }
				prefix  { @Prefix }
				owner   { @Owner }
			}
		//@MidGap
		@EvenBodyMargins {
			@PageIntroEvenTopSection @Orient
			//@MidGap @ChooseIntroColList @ColumnNumber
		}
		//1rt @OneRow
		{  //        @EvenBodyMargins @PageFootSection
		   //@MidGap @PageHeaders.@Start @RunningIntroEvenFootHeader
			@MajorNum { @MajorNum } @MajorTitle { @MajorTitle }
			@MinorNum { @MinorNum } @MinorTitle { @MinorTitle }
			{
			    @MakePageNum
				numbers { @IntroPageNumbers }
				rawnum  { @Next @PageNum }
				prefix  { @Prefix }
				owner   { @Owner }
			}
		}
	    }
	//  @RunningIntroPageList
		@PageHeaders { @PageHeaders }
		@ColumnNumber { @ColumnNumber }
		@Orient { @Orient }
	    @Next @Next @PageNum
    }

    def @PageList
	named @ColumnNumber {}
	named @PageHeaders {}
	named extra { No }
	named @Orient {}
	named @AtTop { @Null }
	right @FirstPageNum
    {
	@PageHeaders @Case {
	    { None Simple } @Yield @SimplePageList
		  @ColumnNumber { @ColumnNumber }
		  @PageHeaders { @PageHeaders }
		  @Orient { @Orient }
		  extra { extra }
		  @AtTop { @AtTop }
		  @FirstPageNum
	    { Running Titles NoTitles } @Yield @RunningPageList
		  @ColumnNumber { @ColumnNumber }
		  @PageHeaders { @PageHeaders }
		  @Orient { @Orient }
		  extra { extra }
		  @AtTop { @AtTop }
		  @FirstPageNum
	}
	//
	@PageMark last.page
    }

    def @IntroPageList
	named @ColumnNumber {}
	named @PageHeaders {}
	named @Orient {}
	named extra { No }
	named @AtTop { @Null }
	right @FirstPageNum
    {
	@PageHeaders @Case {
	    { None Simple } @Yield @SimpleIntroPageList
		  @ColumnNumber { @ColumnNumber }
		  @PageHeaders { @PageHeaders }
		  @Orient { @Orient }
		  extra { extra }
		  @AtTop { @AtTop }
		  @FirstPageNum
	    { Running Titles NoTitles } @Yield @RunningIntroPageList
		  @ColumnNumber { @ColumnNumber }
		  @PageHeaders { @PageHeaders }
		  @Orient { @Orient }
		  extra { extra }
		  @AtTop { @AtTop }
		  @FirstPageNum
	}
    }

    def @ContinuousPageList
	named @Orient {}
    {
	{@OrientedWidth @Orient} @Wide
	{   //@TopMargin ||@EvenLeftMargin
	    {
				@BeginFootNoteCounter
		//		@ColPlace
		//@FootAboveGap	@ColFootNoteSection
		//@FootAboveGap	@PageFootNoteSection
	    }
	    ||@EvenRightMargin //@FootMargin
	}
    }


    ###########################################################################
    #                                                                         #
    #  Table of contents (including lists of figures and tables).             #
    #                                                                         #
    ###########################################################################

    def @ContentsItem
	named indent { 0f }
	named crosstag {}
	named number {}
	named title {}
	named pagenum {}
	named pregap { @ContentsGap }
	named postgap { 0c }
	named protect { No }
    {
	def @Leaders { @ContentsLeader &@ContentsLeaderGap @Leaders }

	def @OptionalCrossLink right x
	{
	    crosstag @Case {
		""   @Yield x
		else @Yield { crosstag @CrossLink x }
	    }
	}

	def @RightPart
	{
	    @ContentsRightWidth @Wide {
		&1rt { @OptionalCrossLink pagenum //0.5vx }
	    }
	}

	def @Item
	{
	    |indent @OptionalCrossLink number @ContentsFormat @HExpand {
	        title & @ContentsLeaderGap @Wide &1rt @OneCol {
		    @Leaders & @RightPart &0io
	        }
	    }
	    |@ContentsRightWidth
	}

	//pregap
	//0.5vx
	protect @Case {
	   No    @Yield @Item
	   Yes   @Yield @Protect @Item
	}
	//postgap
    }

    def @ContentsPlace { @Galley }
    def @FigureContentsPlace { @Galley }
    def @TableContentsPlace { @Galley }

    def @SendContents into { @ContentsPlace&&foll_or_prec }
	right x
    {
	x
    }

    def @SendFigureContents into { @FigureContentsPlace&&foll_or_prec }
	right x
    {
	x
    }

    def @SendTableContents into { @TableContentsPlace&&foll_or_prec }
	right x
    {
	x
    }

    def @ContentsEntry
	left  wanted
	named indent { 0f }
	named crosstag {}
	named number {}
	named title {}
	named pagenum {}
	named pregap { @ContentsGap }
	named postgap { 0c }
    {
	@MakeContents.wanted @Case {
	    Yes.Yes   @Yield { @SendContents @ContentsItem
				   indent { indent }
				   crosstag { crosstag }
				   number { number }
				   title { title }
				   pagenum { pagenum }
				   pregap { pregap }
				   postgap { postgap }
			     }
	    else      @Yield @Null
	}
    }

    def @FigureContentsEntry
	left  wanted
	named indent { 0f }
	named crosstag {}
	named number {}
	named title {}
	named pagenum {}
	named pregap { @ContentsGap }
	named postgap { 0c }
    {
	@MakeFigureContents.wanted @Case {
	    Yes.Yes   @Yield { @SendFigureContents @ContentsItem
				   indent { indent }
				   crosstag { crosstag }
				   number { number }
				   title { title }
				   pagenum { pagenum }
				   pregap { pregap }
				   postgap { postgap }
			     }
	    else      @Yield @Null
	}
    }

    def @TableContentsEntry
	left  wanted
	named indent { 0f }
	named crosstag {}
	named number {}
	named title {}
	named pagenum {}
	named pregap { @ContentsGap }
	named postgap { 0c }
    {
	@MakeTableContents.wanted @Case {
	    Yes.Yes   @Yield { @SendTableContents @ContentsItem
				   indent { indent }
				   crosstag { crosstag }
				   number { number }
				   title { title }
				   pagenum { pagenum }
				   pregap { pregap }
				   postgap { postgap }
			     }
	    else      @Yield @Null
	}
    }

    def @MajorContentsEntry
	left  wanted
	named indent { 0f }
	named crosstag {}
	named number {}
	named title {}
	named pagenum {}
	named pregap { @ContentsGapAbove }
	named postgap { @ContentsGapBelow }
    {
	@MakeContents.wanted @Case {
	    Yes.Yes   @Yield { @SendContents @ContentsItem
				   indent { indent }
				   crosstag { crosstag }
				   number { @ContentsFont @Font number }
				   title { @ContentsFont @Font title }
				   pagenum { pagenum }
				   pregap { pregap }
				   postgap { postgap }
				   protect { Yes }
			     }
	    else      @Yield @Null
	}
    }

    def @VeryMajorContentsEntry
	left  wanted
	named indent { 0.5rt }
	named title {}
	named pregap { @ContentsPartGapAbove }
	named postgap { @ContentsPartGapBelow }
    {
	def item
	{
	    //pregap
	    //0.5vx
	    |indent @ContentsFont @Font @OneCol title |
	    //0.5vx
	    //postgap
	}

	@MakeContents.wanted @Case {
	    Yes.Yes   @Yield @SendContents item
	    else      @Yield @Null
	}

    }

    def @ContentsSection
    {
	def @ContentsList { @ContentsPlace // @ContentsList }

	@MakeContents @Case {
	    { Yes Bypass }  @Yield @ContentsList
	    else	    @Yield @Null
	}
    }

    def @FigureContentsSection
    {
	def @FigureContentsList { @FigureContentsPlace // @FigureContentsList }

	@MakeFigureContents @Case {
	    { Yes Bypass }  @Yield @FigureContentsList
	    else	    @Yield @Null
	}
    }

    def @TableContentsSection
    {
	def @TableContentsList { @TableContentsPlace // @TableContentsList }

	@MakeTableContents @Case {
	    { Yes Bypass }  @Yield @TableContentsList
	    else	    @Yield @Null
	}
    }

    ###########################################################################
    #                                                                         #
    #  Bypass table of contents.                                              #
    #                                                                         #
    ###########################################################################

    def @BypassContentsEntry into { @ContentsPlace&&preceding }
	named indent { 0f }
	named crosstag {}
	named number {}
	named title {}
	named pagenum {}
    {
	@MakeContents @Case {
	    Bypass @Yield { @ContentsItem
				indent { indent }
				crosstag { crosstag }
				number { number }
				title { title }
				pagenum { pagenum }
				pregap { @ContentsGap }
				postgap { 0c }
			  }
	    else  @Yield  @Null
	}
    }

    def @BypassFigureContentsEntry into { @FigureContentsPlace&&preceding }
	named indent { 0f }
	named crosstag {}
	named number {}
	named title {}
	named pagenum {}
    {
	@MakeFigureContents @Case {
	    Bypass @Yield { @ContentsItem
				indent { indent }
				crosstag { crosstag }
				number { number }
				title { title }
				pagenum { pagenum }
				pregap { @ContentsGap }
				postgap { 0c }
			  }
	    else  @Yield  @Null
	}
    }

    def @BypassTableContentsEntry into { @TableContentsPlace&&preceding }
	named indent { 0f }
	named crosstag {}
	named number {}
	named title {}
	named pagenum {}
    {
	@MakeTableContents @Case {
	    Bypass @Yield { @ContentsItem
				indent { indent }
				crosstag { crosstag }
				number { number }
				title { title }
				pagenum { pagenum }
				pregap { @ContentsGap }
				postgap { 0c }
			  }
	    else  @Yield  @Null
	}
    }

    def @BypassMajorContentsEntry into { @ContentsPlace&&preceding }
	named indent { 0f }
	named crosstag {}
	named number {}
	named title {}
	named pagenum {}
    {
	@MakeContents @Case {
	    Bypass @Yield { @ContentsItem
				indent { indent }
				crosstag { crosstag }
				number { @B number }
				title { @B title }
				pagenum { pagenum }
				pregap { @ContentsGapAbove }
				postgap { @ContentsGapBelow }
			  }
	    else  @Yield  @Null
	}
    }


    ###########################################################################
    #                                                                         #
    #  Endnotes.                                                              #
    #                                                                         #
    ###########################################################################

    export num
    def @EndNoteList
	named @Tag {}
	right num
    {
	@Galley //@EndNoteGap @EndNoteList @Next num
    }

    def endtag right num
    {
        @BackEnd @Case {
	    PlainText @Yield {
	        ({@EndNoteNumbers @Num num})
	    }
	    else @Yield {
	        +0.3v @VShift 0.8f @Font @EndNoteNumbers @Num num
	    }
        }
    }

    def @EndNote
	named @Tag {}
	right x
    {
	def ftag
	{
	    @EndNoteFont @Font @EndNoteList&&@Tag @Open { endtag num }
	}

	def @ENote into { @EndNoteList&&following }
	{
	    @EndNoteFont @Font @EndNoteBreak @Break
	    { { @EndNoteList&&preceding @Tagged @Tag ftag } @EndNoteFormat x }
	}

	@Null & @EndNoteFont @Font ftag & @ENote
    }


    ###########################################################################
    #                                                                         #
    #  Margin Notes.                                                          #
    #                                                                         #
    ###########################################################################

    def @ZeroSize right x
    {
	@HContract @VContract { ^/0io |0io @OneCol @OneRow x |0io /0io }
    }

    def @MargPut
	left parity
	right x
    {
	@MarginNoteFont @Font @MarginNoteBreak @Break @ZeroSize {
	  @BackEnd @Case {
	    PlainText @Yield ""
	    PostScript @Yield {
	    { parity "LoutMargShift gsave" // "grestore" } @Graphic
	    {
		|@MarginNoteHGap @MarginNoteWidth @Wide @OneRow x
		|@MarginNoteHGap //@MarginNoteVGap
	    }
	    }
	    PDF @Yield { "% @MargPut/LoutMargShift UNIMPLEMENTED" @Graphic {
		  |@MarginNoteHGap @MarginNoteWidth @Wide @OneRow x
		  |@MarginNoteHGap //@MarginNoteVGap
	      }	# VT: PDF currently has no output
	    }
	  }
	}
    }

    def @LeftNote  right x { @Null & 0 @MargPut x }
    def @RightNote right x { @Null & 1 @MargPut x }
    def @OuterNote right x { @Null & 2 @MargPut x }
    def @InnerNote right x { @Null & 3 @MargPut x }


    ###########################################################################
    #                                                                         #
    #  @Place: places an object at an arbitrary point on the page.            #
    #                                                                         #
    ###########################################################################

#
# VT: the expressions in the braces will work for PostScript but not for PDF
# they should be modified in the way the "named c { " cm" }" blocks were modified above
# but since the point of @Place is to output a matrix (?), I have not implemented this change
#
    def @Place
      named x
	named "+" precedence 96 associativity left left a right b { a b "add" }
	named "-" precedence 96 associativity left left a right b { a b "sub" }
	named "/" precedence 97 associativity left left a right b { a b "div" }
	named "*" precedence 98 associativity left left a right b { a b "mul" }
	named c   precedence 99                    left a         { a "cm"    }
	named i   precedence 99                    left a         { a "in"    }
	named e   precedence 99                    left a         { a "em"    }
	named p   precedence 99                    left a         { a "pt"    }
	named f   precedence 99                    left a         { a "ft"    }
	named s   precedence 99                    left a         { a "sp"    }
	named v   precedence 99                    left a         { a "vs"    }
	named cm  precedence 99                    left a         { a "cm"    }
	named in  precedence 99                    left a         { a "in"    }
	named em  precedence 99                    left a         { a "em"    }
	named pt  precedence 99                    left a         { a "pt"    }
	named ft  precedence 99                    left a         { a "ft"    }
	named sp  precedence 99                    left a         { a "sp"    }
	named vs  precedence 99                    left a         { a "vs"    }
	{ 0 }
      named y
	named "+" precedence 96 associativity left left a right b { a b "add" }
	named "-" precedence 96 associativity left left a right b { a b "sub" }
	named "/" precedence 97 associativity left left a right b { a b "div" }
	named "*" precedence 98 associativity left left a right b { a b "mul" }
	named c   precedence 99                    left a         { a "cm"    }
	named i   precedence 99                    left a         { a "in"    }
	named e   precedence 99                    left a         { a "em"    }
	named p   precedence 99                    left a         { a "pt"    }
	named f   precedence 99                    left a         { a "ft"    }
	named s   precedence 99                    left a         { a "sp"    }
	named v   precedence 99                    left a         { a "vs"    }
	named cm  precedence 99                    left a         { a "cm"    }
	named in  precedence 99                    left a         { a "in"    }
	named em  precedence 99                    left a         { a "em"    }
	named pt  precedence 99                    left a         { a "pt"    }
	named ft  precedence 99                    left a         { a "ft"    }
	named sp  precedence 99                    left a         { a "sp"    }
	named vs  precedence 99                    left a         { a "vs"    }
	{ 0 }
      right val
    {
	@ZeroSize {
	  @BackEnd @Case {
	    PlainText @Yield ""
	    PostScript @Yield {
		{ "LoutPageDict begin matr setmatrix" x y "translate end gsave"
		  // "grestore" } @Graphic val
	    }
	    else @Yield { { "% @Place UNIMPLEMENTED" } @Graphic val	# VT: PDF currently has no output
	    }
	  }
	}
    }


    ###########################################################################
    #                                                                         #
    #   @Theorem, @Proof, and @EndProof                                       #
    #                                                                         #
    ###########################################################################

    export @Tag val
    def @TheoremCounterMarker
	named @Tag {}
	named val {}
    {
	@Null
    }

    def @BeginTheoremCounter
	right prefix
    {
	@TheoremCounterMarker val { prefix @Join 0 }
    }

    def @TheoremNum right tag
    {
	@TheoremCounterMarker&&tag @Open { @Next val }
    }

    def @TheoremCounterIncrement
	right tag
    {
	@TheoremCounterMarker&&preceding @Tagged tag
	@TheoremCounterMarker val { @TheoremNum tag }
	@NumberMarker @Tag { tag } @Value { @TheoremNum tag }
    }

    def @Theorem
       named @Tag {}
       named @Title {}
       right x
    {
	def @TheoremTitle
	{
	   @Title @Case {
		""   @Yield @Null
		else @Yield @TheoremTitleFormat @Title
	   }
	}

	{ @PageMark @Tag & @TheoremCounterIncrement @Tag } @Insert
	@TheoremFormat
	    word { theorem @WordVal @TheoremWord }
	    number { @TheoremNum @Tag }
	    title { @TheoremTitle }
	    body { x }
    }

    macro @Proof { @B { {proof @WordVal @ProofWord}: } &2s }

    macro @EndProof { &1rt @Box {} }


    ###########################################################################
    #                                                                         #
    #   @Definition                                                           #
    #                                                                         #
    ###########################################################################

    export @Tag val
    def @DefinitionCounterMarker
	named @Tag {}
	named val {}
    {
	@Null
    }

    def @BeginDefinitionCounter
	right prefix
    {
	@DefinitionCounterMarker val { prefix @Join 0 }
    }

    def @DefinitionNum right tag
    {
	@DefinitionCounterMarker&&tag @Open { @Next val }
    }

    def @DefinitionCounterIncrement
	right tag
    {
	@DefinitionCounterMarker&&preceding @Tagged tag
	@DefinitionCounterMarker val { @DefinitionNum tag }
	@NumberMarker @Tag { tag } @Value { @DefinitionNum tag }
    }

    def @Definition
       named @Tag {}
       named @Title {}
       right x
    {
	def @DefinitionTitle
	{
	   @Title @Case {
		""   @Yield @Null
		else @Yield (@Title)
	   }
	}

	{ @PageMark @Tag & @DefinitionCounterIncrement @Tag } @Insert
	@DefinitionFormat
	    word { definition @WordVal @DefinitionWord }
	    number { @DefinitionNum @Tag }
	    title { @DefinitionTitle }
	    body { x }
    }


    ###########################################################################
    #                                                                         #
    #   @Claim                                                                #
    #                                                                         #
    ###########################################################################

    export @Tag val
    def @ClaimCounterMarker
	named @Tag {}
	named val {}
    {
	@Null
    }

    def @BeginClaimCounter
	right prefix
    {
	@ClaimCounterMarker val { prefix @Join 0 }
    }

    def @ClaimNum right tag
    {
	@ClaimCounterMarker&&tag @Open { @Next val }
    }

    def @ClaimCounterIncrement
	right tag
    {
	@ClaimCounterMarker&&preceding @Tagged tag
	@ClaimCounterMarker val { @ClaimNum tag }
	@NumberMarker @Tag { tag } @Value { @ClaimNum tag }
    }

    def @Claim
       named @Tag {}
       named @Title {}
       right x
    {
	def @ClaimTitle
	{
	   @Title @Case {
		""   @Yield @Null
		else @Yield (@Title)
	   }
	}

	{ @PageMark @Tag & @ClaimCounterIncrement @Tag } @Insert
	@ClaimFormat
	    word { claim @WordVal @ClaimWord }
	    number { @ClaimNum @Tag }
	    title { @ClaimTitle }
	    body { x }
    }


    ###########################################################################
    #                                                                         #
    #   @Proposition                                                          #
    #                                                                         #
    ###########################################################################

    export @Tag val
    def @PropositionCounterMarker
	named @Tag {}
	named val {}
    {
	@Null
    }

    def @BeginPropositionCounter
	right prefix
    {
	@PropositionCounterMarker val { prefix @Join 0 }
    }

    def @PropositionNum right tag
    {
	@PropositionCounterMarker&&tag @Open { @Next val }
    }

    def @PropositionCounterIncrement
	right tag
    {
	@PropositionCounterMarker&&preceding @Tagged tag
	@PropositionCounterMarker val { @PropositionNum tag }
	@NumberMarker @Tag { tag } @Value { @PropositionNum tag }
    }

    def @Proposition
       named @Tag {}
       named @Title {}
       right x
    {
	def @PropositionTitle
	{
	   @Title @Case {
		""   @Yield @Null
		else @Yield (@Title)
	   }
	}

	{ @PageMark @Tag & @PropositionCounterIncrement @Tag } @Insert
	@PropositionFormat
	    word { proposition @WordVal @PropositionWord }
	    number { @PropositionNum @Tag }
	    title { @PropositionTitle }
	    body { x }
    }


    ###########################################################################
    #                                                                         #
    #   @Lemma                                                                #
    #                                                                         #
    ###########################################################################

    export @Tag val
    def @LemmaCounterMarker
	named @Tag {}
	named val {}
    {
	@Null
    }

    def @BeginLemmaCounter
	right prefix
    {
	@LemmaCounterMarker val { prefix @Join 0 }
    }

    def @LemmaNum right tag
    {
	@LemmaCounterMarker&&tag @Open { @Next val }
    }

    def @LemmaCounterIncrement
	right tag
    {
	@LemmaCounterMarker&&preceding @Tagged tag
	@LemmaCounterMarker val { @LemmaNum tag }
	@NumberMarker @Tag { tag } @Value { @LemmaNum tag }
    }

    def @Lemma
       named @Tag {}
       named @Title {}
       right x
    {
	def @LemmaTitle
	{
	   @Title @Case {
		""   @Yield @Null
		else @Yield (@Title)
	   }
	}

	{ @PageMark @Tag & @LemmaCounterIncrement @Tag } @Insert
	@LemmaFormat
	    word { lemma @WordVal @LemmaWord }
	    number { @LemmaNum @Tag }
	    title { @LemmaTitle }
	    body { x }
    }


    ###########################################################################
    #                                                                         #
    #   @Corollary                                                            #
    #                                                                         #
    ###########################################################################

    export @Tag val
    def @CorollaryCounterMarker
	named @Tag {}
	named val {}
    {
	@Null
    }

    def @BeginCorollaryCounter
	right prefix
    {
	@CorollaryCounterMarker val { prefix @Join 0 }
    }

    def @CorollaryNum right tag
    {
	@CorollaryCounterMarker&&tag @Open { @Next val }
    }

    def @CorollaryCounterIncrement
	right tag
    {
	@CorollaryCounterMarker&&preceding @Tagged tag
	@CorollaryCounterMarker val { @CorollaryNum tag }
	@NumberMarker @Tag { tag } @Value { @CorollaryNum tag }
    }

    def @Corollary
       named @Tag {}
       named @Title {}
       right x
    {
	def @CorollaryTitle
	{
	   @Title @Case {
		""   @Yield @Null
		else @Yield (@Title)
	   }
	}

	{ @PageMark @Tag & @CorollaryCounterIncrement @Tag } @Insert
	@CorollaryFormat
	    word { corollary @WordVal @CorollaryWord }
	    number { @CorollaryNum @Tag }
	    title { @CorollaryTitle }
	    body { x }
    }


    ###########################################################################
    #                                                                         #
    #   @Example                                                              #
    #                                                                         #
    ###########################################################################

    export @Tag val
    def @ExampleCounterMarker
	named @Tag {}
	named val {}
    {
	@Null
    }

    def @BeginExampleCounter
	right prefix
    {
	@ExampleCounterMarker val { prefix @Join 0 }
    }

    def @ExampleNum right tag
    {
	@ExampleCounterMarker&&tag @Open { @Next val }
    }

    def @ExampleCounterIncrement
	right tag
    {
	@ExampleCounterMarker&&preceding @Tagged tag
	@ExampleCounterMarker val { @ExampleNum tag }
	@NumberMarker @Tag { tag } @Value { @ExampleNum tag }
    }

    def @Example
       named @Tag {}
       named @Title {}
       right x
    {
	def @ExampleTitle
	{
	   @Title @Case {
		""   @Yield @Null
		else @Yield (@Title)
	   }
	}

	{ @PageMark @Tag & @ExampleCounterIncrement @Tag } @Insert
	@ExampleFormat
	    word { example @WordVal @ExampleWord }
	    number { @ExampleNum @Tag }
	    title { @ExampleTitle }
	    body { x }
    }


    ###########################################################################
    #                                                                         #
    #  @BeginAllCounters - begin all counters                                 #
    #                                                                         #
    ###########################################################################

    def @BeginAllCounters
	left condition
	right prefix
    {
	condition @Do {
	    @BeginTheoremCounter prefix
	    // @BeginDefinitionCounter prefix
	    // @BeginClaimCounter prefix
	    // @BeginPropositionCounter prefix
	    // @BeginLemmaCounter prefix
	    // @BeginCorollaryCounter prefix
	    // @BeginExampleCounter prefix
	}
    }


    ###########################################################################
    #                                                                         #
    #  @Reference - a reference.                                              #
    #                                                                         #
    ###########################################################################

    export @Tag @Type @Abstract @Address @Annote @Author @Day @Edition
	   @HowPublished @InAuthor @InTitle @Institution @Journal @Keywords
	   @Label @Month @Note @Number @Organization @Page @Pages @Pinpoint
	   @Publisher @Title @TitleNote @TRType @URL @Volume @Year

    def @Reference
	named compulsory @Tag		{}
	named compulsory @Type		{}
	named @Abstract			{}
	named @Address			{}
	named @Annote			{}
	named @Author			{}
	named @Day			{}
	named @Edition			{}
	named @HowPublished		{}
	named @InAuthor			{}
	named @InTitle			{}
	named @Institution		{}
	named @Journal			{}
	named @Keywords			{}
	named @Label			{}
	named @Month			{}
	named @Note			{}
	named @Number			{}
	named @Organization		{}
	named @Page			{}
	named @Pages			{}
	named @Pinpoint			{}
	named @Publisher		{}
	named @Title			{}
	named @TitleNote		{}
	named @TRType			{}
	named @URL
	  named "~"  { "~"      }
	  named "/"  { "/"  &0p }
	  named "//" { "//" &0p }	{}
	named @Volume			{}
	named @Year			{}
    { @Null }


    ###########################################################################
    #                                                                         #
    #  @CiteLabel - the value of the label of a reference within a citation.  #
    #                                                                         #
    ###########################################################################

    def @CiteLabel
	left label
	right tag 
    {
	tag @CrossLink @RefCiteLabels
	    @RefNum       { @NumberOf tag				}
	    @Tag          { tag						}
	    @Type         { @Reference&&tag @Open { @Type }		}
	    @Abstract     { @Reference&&tag @Open { @Abstract }		}
	    @Address      { @Reference&&tag @Open { @Address }		}
	    @Annote       { @Reference&&tag @Open { @Annote }		}
	    @Author       { @Reference&&tag @Open { @Author }		}
	    @Day          { @Reference&&tag @Open { @Day }		}
	    @Edition      { @Reference&&tag @Open { @Edition }		}
	    @HowPublished { @Reference&&tag @Open { @HowPublished }	}
	    @InAuthor     { @Reference&&tag @Open { @InAuthor }		}
	    @InTitle      { @Reference&&tag @Open { @InTitle }		}
	    @Institution  { @Reference&&tag @Open { @Institution }	}
	    @Journal      { @Reference&&tag @Open { @Journal }		}
	    @Keywords     { @Reference&&tag @Open { @Keywords }		}

	    @Label        { label @Case {
			      "" @Yield {@Reference&&tag @Open {@Label}}
			      else @Yield label
			    }						}

	    @Month        { @Reference&&tag @Open { @Month }		}
	    @Note         { @Reference&&tag @Open { @Note }		}
	    @Number       { @Reference&&tag @Open { @Number }		}
	    @Organization { @Reference&&tag @Open { @Organization }	}
	    @Page         { @Reference&&tag @Open { @Page }		}
	    @Pages        { @Reference&&tag @Open { @Pages }		}
	    @Pinpoint     { @Reference&&tag @Open { @Pinpoint }		}
	    @Publisher    { @Reference&&tag @Open { @Publisher }	}
	    @Title        { @Reference&&tag @Open { @Title }		}
	    @TitleNote    { @Reference&&tag @Open { @TitleNote }	}
	    @TRType       { @Reference&&tag @Open { @TRType }		}
	    @Volume       { @Reference&&tag @Open { @Volume }		}
	    @Year         { @Reference&&tag @Open { @Year }		}
    }


    ###########################################################################
    #                                                                         #
    #  @ListLabel - the value of the label of a reference within a ref list.  #
    #                                                                         #
    ###########################################################################

    def @ListLabel
	left label
	right tag 
    {
	@RefListLabels
	    @RefNum       { @NumberOf tag				}
	    @Tag          { tag						}
	    @Type         { @Reference&&tag @Open { @Type }		}
	    @Abstract     { @Reference&&tag @Open { @Abstract }		}
	    @Address      { @Reference&&tag @Open { @Address }		}
	    @Annote       { @Reference&&tag @Open { @Annote }		}
	    @Author       { @Reference&&tag @Open { @Author }		}
	    @Day          { @Reference&&tag @Open { @Day }		}
	    @Edition      { @Reference&&tag @Open { @Edition }		}
	    @HowPublished { @Reference&&tag @Open { @HowPublished }	}
	    @InAuthor     { @Reference&&tag @Open { @InAuthor }		}
	    @InTitle      { @Reference&&tag @Open { @InTitle }		}
	    @Institution  { @Reference&&tag @Open { @Institution }	}
	    @Journal      { @Reference&&tag @Open { @Journal }		}
	    @Keywords     { @Reference&&tag @Open { @Keywords }		}

	    @Label        { label @Case {
			      "" @Yield {@Reference&&tag @Open {@Label}}
			      else @Yield label
			    }						}

	    @Month        { @Reference&&tag @Open { @Month }		}
	    @Note         { @Reference&&tag @Open { @Note }		}
	    @Number       { @Reference&&tag @Open { @Number }		}
	    @Organization { @Reference&&tag @Open { @Organization }	}
	    @Page         { @Reference&&tag @Open { @Page }		}
	    @Pages        { @Reference&&tag @Open { @Pages }		}
	    @Pinpoint     { @Reference&&tag @Open { @Pinpoint }		}
	    @Publisher    { @Reference&&tag @Open { @Publisher }	}
	    @Title        { @Reference&&tag @Open { @Title }		}
	    @TitleNote    { @Reference&&tag @Open { @TitleNote }	}
	    @TRType       { @Reference&&tag @Open { @TRType }		}
	    @Volume       { @Reference&&tag @Open { @Volume }		}
	    @Year         { @Reference&&tag @Open { @Year }		}
    }


    ###########################################################################
    #                                                                         #
    #  @SortKey - the value of the sort key of a reference.                   #
    #                                                                         #
    ###########################################################################

    def @SortKey
	left label
	right tag 
    {
	@RefListSortKey
	    @Tag          { tag						}
	    @Type         { @Reference&&tag @Open { @Type }		}
	    @Abstract     { @Reference&&tag @Open { @Abstract }		}
	    @Address      { @Reference&&tag @Open { @Address }		}
	    @Annote       { @Reference&&tag @Open { @Annote }		}
	    @Author       { @Reference&&tag @Open { @Author }		}
	    @Day          { @Reference&&tag @Open { @Day }		}
	    @Edition      { @Reference&&tag @Open { @Edition }		}
	    @HowPublished { @Reference&&tag @Open { @HowPublished }	}
	    @InAuthor     { @Reference&&tag @Open { @InAuthor }		}
	    @InTitle      { @Reference&&tag @Open { @InTitle }		}
	    @Institution  { @Reference&&tag @Open { @Institution }	}
	    @Journal      { @Reference&&tag @Open { @Journal }		}
	    @Keywords     { @Reference&&tag @Open { @Keywords }		}

	    @Label        { label @Case {
			      "" @Yield {@Reference&&tag @Open {@Label}}
			      else @Yield label
			    }						}

	    @Month        { @Reference&&tag @Open { @Month }		}
	    @Note         { @Reference&&tag @Open { @Note }		}
	    @Number       { @Reference&&tag @Open { @Number }		}
	    @Organization { @Reference&&tag @Open { @Organization }	}
	    @Page         { @Reference&&tag @Open { @Page }		}
	    @Pages        { @Reference&&tag @Open { @Pages }		}
	    @Pinpoint     { @Reference&&tag @Open { @Pinpoint }		}
	    @Publisher    { @Reference&&tag @Open { @Publisher }	}
	    @Title        { @Reference&&tag @Open { @Title }		}
	    @TitleNote    { @Reference&&tag @Open { @TitleNote }	}
	    @TRType       { @Reference&&tag @Open { @TRType }		}
	    @Volume       { @Reference&&tag @Open { @Volume }		}
	    @Year         { @Reference&&tag @Open { @Year }		}
    }


    ###########################################################################
    #                                                                         #
    #  @RefStyle - a reference printing style.                                #
    #                                                                         #
    ###########################################################################

    export @Style
    def @RefStyle
	left @Tag
	named @Style right reftag {}
    {}


    ###########################################################################
    #                                                                         #
    #  @RefPrint - prints reference with tag reftag in appropriate style.     #
    #                                                                         #
    ###########################################################################

    def @RefPrint right reftag
    {	& @RefStyle&&{ @Reference&&reftag @Open { @Type } }
	@Open { @Style reftag } &
    }


    ###########################################################################
    #                                                                         #
    #  @ReferencesSection and @ChapReferencesSection - a list of references.  #
    #                                                                         #
    ###########################################################################

    def @RefPlace { @Galley }
    def @ChapRefPlace { @Galley }

    def @BypassRefPlace { @Galley }
    def @BypassChapRefPlace { @Galley }

    def @ReferencesSection
    {
	def @RefList right num
	{
	    @NumberMarker @Value { @RefNumbers @Num num } & | @RefPlace
	    //@RefListGap @RefList @Next num
	}

	def @BypassRefList
	{
	    @BypassRefPlace //@RefListGap @BypassRefList
	}

	@RefList 1
	//@RefListGap
	@BypassRefList
    }

    def @ChapReferencesSection
    {
	def @ChapRefList right num
	{
	    @NumberMarker @Value { @RefNumbers @Num num } & | @ChapRefPlace
	    //@RefListGap @ChapRefList @Next num
	}

	def @BypassChapRefList
	{
	    @BypassChapRefPlace //@RefListGap @BypassChapRefList
	}

	@ChapRefList 1
	//@RefListGap
	@BypassChapRefList
    }


    ###########################################################################
    #                                                                         #
    #   @RefHeading - heading for reference lists.                            #
    #                                                                         #
    ###########################################################################

    def @RefHeading right x
    {	x @Case {
	    references @Yield @Word&&references
	    bibliography @Yield @Word&&bibliography
	    else @Yield x
	}
    }


    #######################################################################
    #                                                                     #
    #   @ChapRefSection                                                   #
    #                                                                     #
    #######################################################################

    def @ChapRefSection
    {
	@Heading @RefHeading @ChapRefListTitle
	@DP
	@ChapReferencesSection
    }


    ###########################################################################
    #                                                                         #
    #  @SendRef and @ChapSendRef - send one reference to the reference list.  #
    #                                                                         #
    ###########################################################################

    def @RefItem
	left lab
	right ref
    {
	def @ZeroWidth right x { &0io @OneCol x &0io }

	@RefListFormat @Case {
	    NoLabels   @Yield {					   ref	}
	    Labels     @Yield { @ZeroWidth lab |@RefListLabelWidth ref	}
	    DropLabels @Yield { lab //1vx      |@RefListLabelWidth ref	}
	    InLabels   @Yield { lab & 2s @Wide &		   ref	}
	}
    }


    def @RefListItem
	left label
	right tag
    {
	@RefListFont @Font @RefListBreak @Break {
	    @NumberMarker&&preceding @Tagged tag & @PageMark tag
	    |@RefListIndent {label @ListLabel tag} @RefItem {@RefPrint tag}
	    |@RefListRightIndent
	}
    }


    def @SendRef into { @RefPlace&&foll_or_prec }
	left label
	right tag
    {
	def @Key { label @SortKey tag }

	# no @Merge i.e. omit duplicates

	label @RefListItem tag
    }


    def @ChapSendRef into { @ChapRefPlace&&foll_or_prec }
	left label
	right tag
    {
	def @Key { label @SortKey tag }

	# no @Merge i.e. omit duplicates

	label @RefListItem tag
    }


    ###########################################################################
    #                                                                         #
    #  @Ref (bare citation) and its variants.                                 #
    #                                                                         #
    ###########################################################################

    def @Ref
	named label {}
	right tag
    {
	@MakeReferences @Case {
	    Yes	  @Yield { label @CiteLabel tag & label @SendRef tag }
	    else  @Yield @Null
	}
    }

    def @NoRef
	named label {}
	right tag
    {
	@MakeReferences @Case {
	    Yes  @Yield { label @SendRef tag }
	    else @Yield @Null
	}
    }

    def @ChapRef
	named label {}
	right tag
    {
	@MakeReferences @Case {
	    Yes  @Yield { label @CiteLabel tag & label @ChapSendRef tag }
	    else @Yield @Null
	}
    }

    def @NoChapRef
	named label {}
	right tag
    {
	@MakeReferences @Case {
	    Yes  @Yield { label @ChapSendRef tag }
	    else @Yield @Null
	}
    }


    ###########################################################################
    #                                                                         #
    #  Bypass references.                                                     #
    #                                                                         #
    ###########################################################################

    def @BypassReference into { @BypassRefPlace&&preceding }
	named label {}
	named value {}
    {
	@MakeReferences @Case {
	    Bypass @Yield { label @RefItem value }
	    else   @Yield @Null
	}
    }

    def @BypassChapReference into { @BypassChapRefPlace&&preceding }
	named label {}
	named value {}
    {
	@MakeReferences @Case {
	    Bypass @Yield { label @RefItem value }
	    else   @Yield @Null
	}
    }


    ###########################################################################
    #                                                                         #
    #  @Cite (citation) and its variants.                                     #
    #                                                                         #
    ###########################################################################

    export "$" "," ";"
    def @Cite body cite
    {
	macro "$" { @Ref }
	def "," precedence 90 left x { x"," }
	def ";" precedence 90 left x { x";" }

	@MakeReferences @Case {
	    Yes  @Yield {
	        @RefCiteStyle cite
	    }
	    else @Yield @Null
	}
    }

    export "$" "," ";"
    def @NoCite body cite
    {
	macro "$" { @NoRef }
	def "," precedence 90 left x { x"," }
	def ";" precedence 90 left x { x";" }

	@MakeReferences @Case {
	    Yes  @Yield { cite }
	    else @Yield @Null
	}
    }

    export "$" "," ";"
    def @ChapCite body cite
    {
	macro "$" { @ChapRef }
	def "," precedence 90 left x { x"," }
	def ";" precedence 90 left x { x";" }

	@MakeReferences @Case {
	    Yes  @Yield { @RefCiteStyle cite }
	    else @Yield @Null
	}
    }

    export "$" "," ";"
    def @NoChapCite body cite
    {
	macro "$" { @NoChapRef }
	def "," precedence 90 left x { x }
	def ";" precedence 90 left x { x";" }

	@MakeReferences @Case {
	    Yes  @Yield { cite }
	    else @Yield @Null
	}
    }

    ###########################################################################
    #                                                                         #
    #  Floating figures.                                                      #
    #                                                                         #
    ###########################################################################

    export @Tag prefix
    def @FigurePrefixMarker
	named @Tag {}
	named prefix {}
    {
	@Null
    }

    export @Tag count
    def @FigureCounterMarker
	named @Tag {}
	named count {}
    {
	@Null
    }

    def @RawFigureNum right tag
    {
	@FigureCounterMarker&&tag @Open { @Next count }
    }

    def @FigureCounterIncrement
	right tag
    {
	   @FigureCounterMarker&&preceding @Tagged tag
	// @FigurePrefixMarker&&preceding @Tagged tag
	// @FigureCounterMarker count { @RawFigureNum tag }
	// @NumberMarker @Tag { tag }
		@Value { { @FigurePrefixMarker&&tag @Open { prefix } }
		    @Join {@FigureNumbers @Num @RawFigureNum tag}
		}
    }

    def @BeginFigureCounter
	left condition
	right prefix
    {
	condition @Do {
	       @FigurePrefixMarker prefix { prefix }
	    // @FigureCounterMarker count { 0 }
	}
    }

    def @EndFigureList { @Galley //@MidGap @EndFigureList }

    def @Figure
	named @Tag {}
	named @Caption { dft }
	named @ShortCaption { dft }
	named @CaptionPos { @FigureCaptionPos }
	named @Format
    	    named @II right x { |@DisplayIndent x |               }
    	    named @QQ right x { |@DisplayIndent x |@DisplayIndent }
    	    named @CC right x { |0.5rt x          |               }
    	    named @RR right x { |1.0rt x          |               }
		right @Body { @FigureFormat @Body }
	named @InitialLanguage { @InitialLanguage }
	named @BypassNumber { dft }
	named @OnePage { dft }
	named @Location { @FigureLocation }
	right @Body
    {
	def @FigureNumber
	{
	    @BypassNumber @Dft @NumberOf @Tag
	}

	def @ContentsCaption
	{
	    @ShortCaption @Dft @Caption
	}

	def @OnePg
	{
	    @OnePage @Case {
		{ No  no } @Yield No
		{ Yes yes } @Yield Yes
		dft @Yield { @Location @Case {
				PageTop		@Yield No
				EvenPageTop	@Yield No
				FullPage	@Yield No
				EvenFullPage	@Yield No
				PageFoot	@Yield Yes
				ColTop		@Yield No
				ColFoot		@Yield Yes
				ColEnd		@Yield No
				Display		@Yield Yes
				AfterLine	@Yield Yes
				TryAfterLine	@Yield Yes
				Raw		@Yield No
			     }
			   }
	    }
	}

	def @CaptionState
	{
	    @Caption @Case {
		dft  @Yield None
		else @Yield { @CaptionPos @Case {
		    { Below below } @Yield Below
		    { Above above } @Yield Above
		} }
	    }
	}

	#def @FigureLabel
	#{
	#    @FigureNumbers @Case {
	#	No   @Yield @Null
	#	else @Yield {
	#	    @CaptionFormat { {figure @WordVal @FigureWord} @NumSep @FigureNumber }
	#	}
	#    }
	#}

	def @CaptionVal
	{
	    @FigureCaptionFont @Font @FigureCaptionBreak @Break
	    { ||0.5rt @FigureCaptionFormat
		 word { figure @WordVal @FigureWord }
		 number { @FigureNumber }
		 caption { @Caption }
	    }
	}

	def @FigureVal
	{
	    @InitialLanguage @Language
	    {
		@MakeFigureContents @FigureContentsEntry
		    indent { 0f }
		    crosstag { @Tag }
		    number { @FigureNumber }
		    title { @InitialLanguage @Language @ContentsCaption }
		    pagenum { @PageOf @Tag }
		// @FigureCounterIncrement @Tag
		// @Body
		// @PageMark @Tag
	    }
	}

	def @FigureTarget
	{
	    @Location @Case {
		PageTop		@Yield  @PageTopPlace&&following
		EvenPageTop	@Yield  @PageTopPlace&&following
		FullPage	@Yield  @FullPagePlace&&following
		EvenFullPage	@Yield  @FullPagePlace&&following
		PageFoot	@Yield  @PageFootAndTopPlace&&following
		ColTop		@Yield  @ColTopPlace&&following
		ColFoot		@Yield  @ColFootAndTopPlace&&following
		ColEnd		@Yield  @EndFigureList&&following
		Display		@Yield  @AfterLinePlace&&following
		AfterLine	@Yield  @AfterLinePlace&&following
		TryAfterLine	@Yield  @TryAfterLinePlace&&following
	    }
	}

	def @SendEncl into { @FigureTarget }
	    right x
	{
	    def @Enclose right x
	    {
		@OnePg @Case {
                	No  @Yield @Format x
                	Yes @Yield x
            	}
	    }

	    x
	}

	def @Send into { @FigureTarget }
	    right x
	{
	    x
	}

	def @EvenFullPageSend into { @EvenFullPagePlace&&following }
	    right x
	{
	    @OneRow x
	}

	def @EvenPageSend into { @EvenPagePlace&&following }
	    right x
	{
	    @OneRow x
	}

	def @RawFigureVal
	{
	    @OnePg.@CaptionState @Case
	    {
		Yes.Below @Yield @OneRow { @Format @FigureVal @DP @CaptionVal }
		Yes.Above @Yield @OneRow { @CaptionVal @DP @Format @FigureVal }
		Yes.None  @Yield @OneRow { @Format @FigureVal }
		No.Below  @Yield         { @Format @FigureVal @DP @CaptionVal }
		No.Above  @Yield         { @CaptionVal @DP @Format @FigureVal }
		No.None   @Yield         { @Format @FigureVal }
	    }
	}

	def @NonRawFigureVal
	{
	  @OnePg.@CaptionState @Case
	  {
	    Yes.Below @Yield {
		@Send @OneRow { @Format @FigureVal @DP @CaptionVal // @DupRunner}
	    }
	    Yes.Above @Yield {
		@Send @OneRow { @CaptionVal @DP @Format @FigureVal // @DupRunner}
	    }
	    Yes.None @Yield {
		@Send @OneRow { @Format @FigureVal // @DupRunner }
	    }
	    No.Below @Yield {
		@SendEncl { @FigureVal // @Send { @CaptionVal // @DupRunner } }
	    }
	    No.Above @Yield {
		@Send { @CaptionVal // @SendEncl { @FigureVal // @DupRunner } }
	    }
	    No.None @Yield {
		@SendEncl { @FigureVal // @DupRunner }
	    }
	  }
	}

	@Location @Case {
	    Raw		  @Yield @RawFigureVal
	    Display	  @Yield { @NonRawFigureVal &1rt }
	    EvenPageTop   @Yield @EvenPageSend @NonRawFigureVal
	    EvenFullPage  @Yield @EvenFullPageSend @NonRawFigureVal
	    else	  @Yield @NonRawFigureVal
	}
    }


    ###########################################################################
    #                                                                         #
    #  Floating tables (exact clone of figure code immediately above).        #
    #                                                                         #
    ###########################################################################

    export @Tag prefix
    def @TablePrefixMarker
	named @Tag {}
	named prefix {}
    {
	@Null
    }

    export @Tag count
    def @TableCounterMarker
	named @Tag {}
	named count {}
    {
	@Null
    }

    def @RawTableNum right tag
    {
	@TableCounterMarker&&tag @Open { @Next count }
    }

    def @TableCounterIncrement
	right tag
    {
	   @TableCounterMarker&&preceding @Tagged tag
	// @TablePrefixMarker&&preceding @Tagged tag
	// @TableCounterMarker count { @RawTableNum tag }
	// @NumberMarker @Tag { tag }
		@Value { { @TablePrefixMarker&&tag @Open { prefix } }
		    @Join {@TableNumbers @Num @RawTableNum tag}
		}
    }

    def @BeginTableCounter
	left condition
	right prefix
    {
	condition @Do {
	       @TablePrefixMarker prefix { prefix }
	    // @TableCounterMarker count { 0 }
	}
    }

    def @EndTableList { @Galley //@MidGap @EndTableList }

    def @Table
	named @Tag {}
	named @Caption { dft }
	named @ShortCaption { dft }
	named @CaptionPos { @TableCaptionPos }
	named @Format
    	    named @II right x { |@DisplayIndent x |               }
    	    named @QQ right x { |@DisplayIndent x |@DisplayIndent }
    	    named @CC right x { |0.5rt x          |               }
    	    named @RR right x { |1.0rt x          |               }
		right @Body { @TableFormat @Body }
	named @InitialLanguage { @InitialLanguage }
	named @BypassNumber { dft }
	named @OnePage { dft }
	named @Location { @TableLocation }
	right @Body
    {
	def @TableNumber
	{
	    @BypassNumber @Dft @NumberOf @Tag
	}

	def @ContentsCaption
	{
	    @ShortCaption @Dft @Caption
	}

	def @OnePg
	{
	    @OnePage @Case {
		{ No  no } @Yield No
		{ Yes yes } @Yield Yes
		dft @Yield { @Location @Case {
				PageTop		@Yield No
				EvenPageTop	@Yield No
				FullPage	@Yield No
				EvenFullPage	@Yield No
				PageFoot	@Yield Yes
				ColTop		@Yield No
				ColFoot		@Yield Yes
				ColEnd		@Yield No
				Display		@Yield Yes
				AfterLine	@Yield Yes
				TryAfterLine	@Yield Yes
				Raw		@Yield No
			     }
			   }
	    }
	}

	def @CaptionState
	{
	    @Caption @Case {
		dft  @Yield None
		else @Yield { @CaptionPos @Case {
		    { Below below } @Yield Below
		    { Above above } @Yield Above
		} }
	    }
	}

	#def @TableLabel
	#{
	#    @TableNumbers @Case {
	#	No   @Yield @Null
	#	else @Yield {
	#	    @CaptionFormat { {table @WordVal @TableWord} @NumSep @TableNumber }
	#	}
	#    }
	#}

	def @CaptionVal
	{
	    @TableCaptionFont @Font @TableCaptionBreak @Break
	    { ||0.5rt @TableCaptionFormat
		 word { table @WordVal @TableWord }
		 number { @TableNumber }
		 caption { @Caption }
	    }
	}

	def @TableVal
	{
	    @InitialLanguage @Language
	    {
		@MakeTableContents @TableContentsEntry
		    indent { 0f }
		    crosstag { @Tag }
		    number { @TableNumber }
		    title { @InitialLanguage @Language @ContentsCaption }
		    pagenum { @PageOf @Tag }
		// @TableCounterIncrement @Tag
		// @Body
		// @PageMark @Tag
	    }
	}

	def @TableTarget
	{
	    @Location @Case {
		PageTop		@Yield  @PageTopPlace&&following
		EvenPageTop	@Yield  @PageTopPlace&&following
		FullPage	@Yield  @FullPagePlace&&following
		EvenFullPage	@Yield  @FullPagePlace&&following
		PageFoot	@Yield  @PageFootAndTopPlace&&following
		ColTop		@Yield  @ColTopPlace&&following
		ColFoot		@Yield  @ColFootAndTopPlace&&following
		ColEnd		@Yield  @EndTableList&&following
		Display		@Yield  @AfterLinePlace&&following
		AfterLine	@Yield  @AfterLinePlace&&following
		TryAfterLine	@Yield  @TryAfterLinePlace&&following
	    }
	}

	def @SendEncl into { @TableTarget }
	    right x
	{
	    def @Enclose right x
	    {
		@OnePg @Case {
                	No  @Yield @Format x
                	Yes @Yield x
            	}
	    }

	    x
	}

	def @Send into { @TableTarget }
	    right x
	{
	    x
	}

	def @EvenFullPageSend into { @EvenFullPagePlace&&following }
	    right x
	{
	    @OneRow x
	}

	def @EvenPageSend into { @EvenPagePlace&&following }
	    right x
	{
	    @OneRow x
	}

	def @RawTableVal
	{
	    @OnePg.@CaptionState @Case
	    {
		Yes.Below @Yield @OneRow { @Format @TableVal @DP @CaptionVal }
		Yes.Above @Yield @OneRow { @CaptionVal @DP @Format @TableVal }
		Yes.None  @Yield @OneRow { @Format @TableVal }
		No.Below  @Yield         { @Format @TableVal @DP @CaptionVal }
		No.Above  @Yield         { @CaptionVal @DP @Format @TableVal }
		No.None   @Yield         { @Format @TableVal }
	    }
	}

	def @NonRawTableVal
	{
	  @OnePg.@CaptionState @Case
	  {
	    Yes.Below @Yield {
		@Send @OneRow { @Format @TableVal @DP @CaptionVal // @DupRunner}
	    }
	    Yes.Above @Yield {
		@Send @OneRow { @CaptionVal @DP @Format @TableVal // @DupRunner}
	    }
	    Yes.None @Yield {
		@Send @OneRow { @Format @TableVal // @DupRunner }
	    }
	    No.Below @Yield {
		@SendEncl { @TableVal // @Send { @CaptionVal // @DupRunner } }
	    }
	    No.Above @Yield {
		@Send { @CaptionVal // @SendEncl { @TableVal // @DupRunner } }
	    }
	    No.None @Yield {
		@SendEncl { @TableVal // @DupRunner }
	    }
	  }
	}

	@Location @Case {
	    Raw		  @Yield @RawTableVal
	    Display	  @Yield { @NonRawTableVal &1rt }
	    EvenPageTop   @Yield @EvenPageSend @NonRawTableVal
	    EvenFullPage  @Yield @EvenFullPageSend @NonRawTableVal
	    else	  @Yield @NonRawTableVal
	}
    }


    ###########################################################################
    #                                                                         #
    #  Index.                                                                 #
    #                                                                         #
    ###########################################################################

    def @IndexList { @Galley //1vx @IndexList }
    def @BypassIndexList { @Galley //1vx @BypassIndexList }

    def @IndexSection into { @IndexPlace&&following }
	right etc
    {
	// @IndexBreak @Break @IndexList
	// @IndexBreak @Break @BypassIndexList
	// @ClearHeaderComponent
	// etc
    }

    def @DoIndex into { @IndexList&&following }
	left @Key
	named indent { 0f }
	named stem {}
	right @Body
    {
	def @Enclose right x
	{
	    @IndexCtd.indent @Case {

		Yes.0f @Yield {
		    @ClearHeaderComponent
		    //1vx
		    x
		    //1vx
		    1vx @SetHeaderComponent {
			indent @Wide &
			stem @IndexCtdFormat {continued @WordVal @IndexCtdWord}
		    }
		    //1vx
		    1vx @BeginHeaderComponent (unused)
		}

		Yes.1f @Yield {
		    @EndHeaderComponent
		    //1vx
		    x
		    //1vx
		    1vx @BeginHeaderComponent {
			indent @Wide &
			stem @IndexCtdFormat {continued @WordVal @IndexCtdWord}
		    }
		}

		else @Yield x

	    }
	}

	def @Merge left x right y
	{
	    {x @Rump y} @Case
	    {
	        ""      @Yield  x
		else    @Yield  { { x &"0.03fu" , } @Meld y }
	    }

	}

	@IndexFont @Font @IndexBreak @Break { indent @Wide & @Body }
    }

    def @RawIndex
	left x
	named @Tag {}
	named indent { 0f }
	right y
    {
	@MakeIndex @Case {
	    Yes  @Yield { @PageMark @Tag & x @DoIndex stem { y } indent { indent } y }
	    else @Yield @Null
	}
    }

    macro @RawSubIndex    { @RawIndex indent { "1f" } }
    macro @RawSubSubIndex { @RawIndex indent { "2f" } }

    def @Index
	left x
	named @Tag {}
	named indent { 0f }
	named to {}
	right y
    {
	def @PgMk right tag
	{
	  tag @CrossLink @PageOf tag
	}

	def @PgRange
	{
	    to @Case
	    {
		""    @Yield @PgMk @Tag
		else  @Yield {
		    { @PageOf @Tag } @Case
		    {
			{ @PageOf to } @Yield { @PgMk @Tag }
			else	       @Yield { {@PgMk @Tag}--{@PgMk to} }
		    }
		}
	    }
	}


	@MakeIndex @Case {
	    Yes @Yield {
	    @PageMark @Tag &
	    x @DoIndex stem { y } indent { indent } { y &"0.03fu" , @PgRange }
	    }
	    else @Yield @Null
	}
    }

    macro @SubIndex { @Index indent { "1f" } }
    macro @SubSubIndex { @Index indent { "2f" } }

    def @IndexBlanks
    {
	b @RawIndex {} c @RawIndex {} d @RawIndex {} e @RawIndex {}
	f @RawIndex {} g @RawIndex {} h @RawIndex {} i @RawIndex {}
	j @RawIndex {} k @RawIndex {} l @RawIndex {} m @RawIndex {}
	n @RawIndex {} o @RawIndex {} p @RawIndex {} q @RawIndex {}
	r @RawIndex {} s @RawIndex {} t @RawIndex {} u @RawIndex {}
	v @RawIndex {} w @RawIndex {} x @RawIndex {} y @RawIndex {}
	z @RawIndex {}
    }

    def @BypassBeginIndexPlace { @Galley }

    def @BypassBeginIndex force into { @BypassBeginIndexPlace&&preceding } {}

    def @BypassRawIndex force into { @BypassIndexList&&preceding }
	named indent { 0f }
	right x
    {
	&indent x
    }

    def @BypassEndIndex { @Null }


    ###########################################################################
    #                                                                         #
    #  IndexA.                                                                #
    #                                                                         #
    ###########################################################################

    def @IndexAList { @Galley //1vx @IndexAList }
    def @BypassIndexAList { @Galley //1vx @BypassIndexAList }

    def @IndexASection into { @IndexAPlace&&following }
	right etc
    {
	// @IndexAList // etc
	// @BypassIndexAList // etc
    }

    def @DoIndexA into { @IndexAList&&following }
	left @Key
	named indent { 0f }
	right @Body
    {
	def @Merge left x right y
	{
	    {x @Rump y} @Case
	    {
	        ""      @Yield  x
		else    @Yield  { { x &"0.03fu" , } @Meld y }
	    }
	}

	@IndexAFont @Font @IndexABreak @Break { indent @Wide & @Body }
    }

    def @RawIndexA
	left x
	named @Tag {}
	named indent { 0f }
	right y
    {
	@MakeIndexA @Case {
	    Yes  @Yield { @PageMark @Tag & x @DoIndexA indent { indent } y }
	    else @Yield @Null
	}
    }

    macro @RawSubIndexA    { @RawIndexA indent { "1f" } }
    macro @RawSubSubIndexA { @RawIndexA indent { "2f" } }

    def @IndexA
	left x
	named @Tag {}
	named indent { 0f }
	named to {}
	right y
    {
	def @PgMk right tag
	{
	  tag @CrossLink @PageOf tag
	}

	def @PgRange
	{
	    to @Case
	    {
		""    @Yield @PgMk @Tag
		else  @Yield {
		    { @PageOf @Tag } @Case
		    {
			{ @PageOf to } @Yield { @PgMk @Tag }
			else	       @Yield { {@PgMk @Tag}--{@PgMk to} }
		    }
		}
	    }
	}


	@MakeIndexA @Case {
	    Yes @Yield {
	      @PageMark @Tag &
	      x @DoIndexA indent { indent } { y &"0.03fu" , @PgRange }
	    }
	    else @Yield @Null
	}
    }

    macro @SubIndexA { @IndexA indent { "1f" } }
    macro @SubSubIndexA { @IndexA indent { "2f" } }

    def @IndexABlanks
    {
	b @RawIndexA {} c @RawIndexA {} d @RawIndexA {} e @RawIndexA {}
	f @RawIndexA {} g @RawIndexA {} h @RawIndexA {} i @RawIndexA {}
	j @RawIndexA {} k @RawIndexA {} l @RawIndexA {} m @RawIndexA {}
	n @RawIndexA {} o @RawIndexA {} p @RawIndexA {} q @RawIndexA {}
	r @RawIndexA {} s @RawIndexA {} t @RawIndexA {} u @RawIndexA {}
	v @RawIndexA {} w @RawIndexA {} x @RawIndexA {} y @RawIndexA {}
	z @RawIndexA {}
    }

    def @BypassBeginIndexAPlace { @Galley }

    def @BypassBeginIndexA force into { @BypassBeginIndexAPlace&&preceding } {}

    def @BypassRawIndexA force into { @BypassIndexAList&&preceding }
	named indent { 0f }
	right x
    {
	&indent x
    }

    def @BypassEndIndexA { @Null }


    ###########################################################################
    #                                                                         #
    #  IndexB.                                                                #
    #                                                                         #
    ###########################################################################

    def @IndexBList { @Galley //1vx @IndexBList }
    def @BypassIndexBList { @Galley //1vx @BypassIndexBList }

    def @IndexBSection into { @IndexBPlace&&following }
	right etc
    {
	// @IndexBList // etc
	// @BypassIndexBList // etc
    }

    def @DoIndexB into { @IndexBList&&following }
	left @Key
	named indent { 0f }
	right @Body
    {
	def @Merge left x right y
	{
	    {x @Rump y} @Case
	    {
	        ""      @Yield  x
		else    @Yield  { { x &"0.03fu" , } @Meld y }
	    }
	}

	@IndexBFont @Font @IndexBBreak @Break { indent @Wide & @Body }
    }

    def @RawIndexB
	left x
	named @Tag {}
	named indent { 0f }
	right y
    {
	@MakeIndexB @Case {
	    Yes  @Yield { @PageMark @Tag & x @DoIndexB indent { indent } y }
	    else @Yield @Null
	}
    }

    macro @RawSubIndexB    { @RawIndexB indent { "1f" } }
    macro @RawSubSubIndexB { @RawIndexB indent { "2f" } }

    def @IndexB
	left x
	named @Tag {}
	named indent { 0f }
	named to {}
	right y
    {
	def @PgMk right tag
	{
	  tag @CrossLink @PageOf tag
	}

	def @PgRange
	{
	    to @Case
	    {
		""    @Yield @PgMk @Tag
		else  @Yield {
		    { @PageOf @Tag } @Case
		    {
			{ @PageOf to } @Yield { @PgMk @Tag }
			else	       @Yield { {@PgMk @Tag}--{@PgMk to} }
		    }
		}
	    }
	}


	@MakeIndexB @Case {
	    Yes @Yield {
	        @PageMark @Tag &
	        x @DoIndexB indent { indent } { y &"0.03fu" , @PgRange }
	    }
	    else @Yield @Null
	}
    }

    macro @SubIndexB { @IndexB indent { "1f" } }
    macro @SubSubIndexB { @IndexB indent { "2f" } }

    def @IndexBBlanks
    {
	b @RawIndexB {} c @RawIndexB {} d @RawIndexB {} e @RawIndexB {}
	f @RawIndexB {} g @RawIndexB {} h @RawIndexB {} i @RawIndexB {}
	j @RawIndexB {} k @RawIndexB {} l @RawIndexB {} m @RawIndexB {}
	n @RawIndexB {} o @RawIndexB {} p @RawIndexB {} q @RawIndexB {}
	r @RawIndexB {} s @RawIndexB {} t @RawIndexB {} u @RawIndexB {}
	v @RawIndexB {} w @RawIndexB {} x @RawIndexB {} y @RawIndexB {}
	z @RawIndexB {}
    }

    def @BypassBeginIndexBPlace { @Galley }

    def @BypassBeginIndexB force into { @BypassBeginIndexBPlace&&preceding } {}

    def @BypassRawIndexB force into { @BypassIndexBList&&preceding }
	named indent { 0f }
	right x
    {
	&indent x
    }

    def @BypassEndIndexB { @Null }


    ###########################################################################
    #                                                                         #
    #  @LargeScaleStructure                                                   #
    #                                                                         #
    #  The prototype for the value of each large-scale structure symbol       #
    #  (@Chapter, @Section, etc.)                                             #
    #                                                                         #
    ###########################################################################

    def @LargeScaleStructure
	named tag {}			# tag of this large-scale structure sym
	named type {}			# MajorIntro, Major, VeryMajor, or Minor
	named initiallanguage {}	# its language
	named title {}			# its full title
	named runningtitle {}		# its running title
	named aboveheadinggap { 0f }	# gap above heading
	named headingfont {}		# its heading font
	named headingbreak {}		# its heading break
	named headingformat		# its heading format
	    left @Num right @Body {}
	named incontents { No }         # entry in table of contents required
	named contentsindent { 0f }	# only if type is Major
	named word {}
	named numbers { None }
	named attachnum {}		# only if numbers is not None
	named retrievenum {}		# only if numbers is not None
	named bypassnumber {}		# only if numbers is not None, or VeryMajor
	named prefix {}			# prefix of number of this symbol
	named pnprefix {}		# prefix for page numbers of this sym
	named majornum { dft }
	named majortitle { dft }
	named minornum { dft }
	named minortitle { dft }
	named intheorems { No }
	named indisplays { No }
	named infigures { No }
	named intables { No }
	named inrunners { No }
	named sendheader right @Body {}
	named innergap {}
	named endifmajor right innergap {
	    @EndFigureList
	    //innergap @EndNoteList 1
	    //innergap @ChapRefSection
	}
	named wantindefinite { No }
	right @Body
    {

	def @ShortNum
	{
	    numbers @Then {
		bypassnumber @Dft {
		    prefix @Join { numbers @Num retrievenum }
		}
	    }
	}

	def @LongNum
	{
	    numbers @Then {
		initiallanguage @Language { word @NumSep @ShortNum }
	    }
	}

	def @ShortTitle
	{
	    initiallanguage @Language { runningtitle @Dft title }
	}

        def @Run right start
        {
	    inrunners @Do type @Case {

		{ Major MajorIntro } @Yield {
		    start @Runner
			@MajorNum { majornum @Dft @LongNum }
			@MajorTitle { majortitle @Dft @ShortTitle }
			@MinorNum {}
			@MinorTitle {}
			@Owner { tag }
			@Prefix { pnprefix @Join @ShortNum }
		}

		{ ExtraMajor ExtraMajorIntro } @Yield {
		    start @Runner
			@MajorNum { majornum @Dft @LongNum }
			@MajorTitle { majortitle @Dft @ShortTitle }
			@MinorNum { majornum @Dft @LongNum }
			@MinorTitle { majortitle @Dft @ShortTitle }
			@Owner { tag }
			@Prefix { pnprefix @Join @ShortNum }
		}

		{ VeryMajor } @Yield {
		    start @Runner
		        @MajorNum { majornum @Dft @LongNum }
		        @MajorTitle { majortitle @Dft @ShortTitle }
		        @MinorNum {}
		        @MinorTitle {}
		        @Owner { tag }
		        @Prefix {}
		}

		Minor @Yield {
		    start @Runner
			@MajorNum { majornum @Dft @LongNum }
			@MajorTitle { majortitle @Dft @ShortTitle }
			@MinorNum { minornum @Dft @LongNum }
			@MinorTitle { minortitle @Dft @ShortTitle }
			@Owner { tag }
			@Prefix { pnprefix @Join @ShortNum }
		}
	    }
        }

	def @ContentsStuff
	{
	    incontents.type @Case {

		Yes.Minor @Yield {
			incontents @ContentsEntry
			    indent { contentsindent }
			    crosstag { tag }
			    number { @LongNum }
			    title { initiallanguage @Language title }
			    pagenum { @PageOf tag }
	        }

		{ Yes.Major Yes.MajorIntro Yes.ExtraMajor Yes.ExtraMajorIntro } @Yield {
			incontents @MajorContentsEntry
			    crosstag { tag }
			    number { @LongNum }
			    title { initiallanguage @Language title }
			    pagenum { @PageOf tag }
	        }

		{ Yes.VeryMajor } @Yield {
			incontents @VeryMajorContentsEntry
			    title { initiallanguage @Language { bypassnumber: &2s title } }
		}

		else @Yield @Null
	    }
	}

	def @Heading
	{

	    type @Case {

		Minor @Yield {
		    headingfont @Font
		    headingbreak @Break @Protect {@LongNum headingformat title}
		    // @PageMark tag
		}

		{ Major MajorIntro ExtraMajor ExtraMajorIntro } @Yield {
		    sendheader {
		    //aboveheadinggap
		    headingfont @Font
		    headingbreak @Break { @LongNum headingformat title }
		    // @PageMark tag
		    }
		}

		{ VeryMajor } @Yield { sendheader {
		    //aboveheadinggap
		    headingfont @Font
		    headingbreak @Break { bypassnumber headingformat title }
		    // @PageMark tag
		    }
		}
	    }
	}

	def @IfMajor right x
	{
	    type @Case {
		{ MajorIntro Major ExtraMajor ExtraMajorIntro } @Yield x
		else @Yield @Null
	    }
	}

	def @StartIfMajor {
	    type @Case {
		{ MajorIntro Major ExtraMajor ExtraMajorIntro VeryMajor } @Yield Start
		else @Yield NonStart
	    }
	}

	initiallanguage @Language {
		@Heading
	    //   wantindefinite @Case {
		    Yes @Yield @Null
		    No  @Yield ""
		}
            //  numbers @Do {
		  attachnum & @NumberMarker @Tag { tag } @Value { @ShortNum }
		}
	    //  @IfMajor { @FootNoteThrough @Do @BeginFootNoteCounter }
            //  @Run @StartIfMajor
            //  @ContentsStuff
            //  intheorems @BeginAllCounters @ShortNum
            //  indisplays @BeginDisplayCounter @ShortNum
            //  infigures @BeginFigureCounter @ShortNum
            //  intables @BeginTableCounter @ShortNum
            //  @Body
	    //innergap  @IfMajor endifmajor innergap
            //  @Run NonStart
	}
    }

@End @DocumentSetup