Retire support for CSRG supplementary document titles. These are

long obsolete and were never written in mdoc(7) in the first place.
Removes 100 lines from source files.

1 files changed, 2 insertions, 32 deletions

diff --git a/mdoc.7 b/mdoc.7
index 020bbc63..13ff140f 100644
--- a/mdoc.7
+++ b/mdoc.7
@@ -433,7 +433,7 @@ in the alphabetical
 .Ss Document preamble and NAME section macros
 .Bl -column "Brq, Bro, Brc" description
 .It Sx \&Dd Ta document date: Cm $\&Mdocdate$ | Ar month day , year
-.It Sx \&Dt Ta document title: Ar TITLE section Op Ar volume | arch
+.It Sx \&Dt Ta document title: Ar TITLE section Op Ar arch
 .It Sx \&Os Ta operating system version: Op Ar system Op Ar version
 .It Sx \&Nm Ta document name (one argument)
 .It Sx \&Nd Ta document description (one line)
@@ -1299,7 +1299,7 @@ Its syntax is as follows:
 .Pf \. Sx \&Dt
 .Ar TITLE
 .Ar section
-.Op Ar volume | arch
+.Op Ar arch
 .Ed
 .Pp
 Its arguments are as follows:
@@ -1348,35 +1348,6 @@ or
 .Pq paper .
 It should correspond to the manual's filename suffix and defaults to
 the empty string if unspecified.
-.It Ar volume
-This overrides the volume inferred from
-.Ar section .
-This field is optional, and if specified, must be one of
-.Cm USD
-.Pq users' supplementary documents ,
-.Cm PS1
-.Pq programmers' supplementary documents ,
-.Cm AMD
-.Pq administrators' supplementary documents ,
-.Cm SMM
-.Pq system managers' manuals ,
-.Cm URM
-.Pq users' reference manuals ,
-.Cm PRM
-.Pq programmers' reference manuals ,
-.Cm KM
-.Pq kernel manuals ,
-.Cm IND
-.Pq master index ,
-.Cm MMI
-.Pq master index ,
-.Cm LOCAL
-.Pq local manuals ,
-.Cm LOC
-.Pq local manuals ,
-or
-.Cm CON
-.Pq contributed manuals .
 .It Ar arch
 This specifies the machine architecture a manual page applies to,
 where relevant, for example
@@ -1390,7 +1361,6 @@ The list of valid architectures varies by operating system.
 .Pp
 Examples:
 .Dl \&.Dt FOO 1
-.Dl \&.Dt FOO 4 KM
 .Dl \&.Dt FOO 9 i386
 .Pp
 See also