Added "Input Encoding" section to mdoc*.1.VERSION.1.4.4

Newline-escaped lines are concatenated.
Added -fign-macro option.

1 files changed, 23 insertions, 0 deletions

diff --git a/mdoctree.1 b/mdoctree.1
index fcd20fec..d494ae43 100644
--- a/mdoctree.1
+++ b/mdoctree.1
@@ -103,6 +103,8 @@ When rewinding the scope of a block macro, forces the compiler to ignore
 scope violations.  This can seriously mangle the resulting tree.
 .It Fl f Ns Ar ign-escape
 Ignore invalid escape sequences.
+.It Fl f Ns Ar ign-macro
+Ignore unknown macros at the start of input lines.
 .El
 .\" PARAGRAPH
 .Pp
@@ -113,6 +115,27 @@ flag, multiple
 options may be grouped and delimited with a comma.  Using
 .Fl f Ns Ar ign-scope,ign-escape ,
 for example, will try to ignore scope and character-escape errors.
+.\" SUB-SECTION
+.Ss Input Encoding
+The
+.Nm
+utility expects its input to be 7-bit ASCII as defined in
+.Xr ascii 7 .
+The only non-graphing characters accepted are spaces,
+.Sq \  ,
+and tabs,
+.Sq \et .
+Tabs are only accepted in literal block-displays and as column
+delimiters.
+.Pp
+Only Unix-style newlines (\en) are accepted; if the newline is escaped,
+the line is concatenated with the next.
+.\" SUB-SECTION
+.Ss Character Escapes
+Since
+.Nm
+doesn't format its output, character escapes are displayed as passed
+into the compiler. 
 .\" SECTION
 .Sh EXAMPLES
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