===================================================================
RCS file: /cvs/mandoc/Attic/mdoctree.1,v
retrieving revision 1.1
retrieving revision 1.7
diff -u -p -r1.1 -r1.7
--- mandoc/Attic/mdoctree.1	2009/02/21 21:00:06	1.1
+++ mandoc/Attic/mdoctree.1	2009/03/16 23:37:28	1.7
@@ -1,6 +1,6 @@
-.\" $Id: mdoctree.1,v 1.1 2009/02/21 21:00:06 kristaps Exp $
+.\" $Id: mdoctree.1,v 1.7 2009/03/16 23:37:28 kristaps Exp $
 .\"
-.\" Copyright (c) 2009 Kristaps Dzonsons <kristaps@kth.se>
+.\" Copyright (c) 2009 Kristaps Dzonsons <kristaps@openbsd.org>
 .\"
 .\" Permission to use, copy, modify, and distribute this software for any
 .\" purpose with or without fee is hereby granted, provided that the
@@ -16,7 +16,7 @@
 .\" TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 .\" PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: February 21 2009 $
+.Dd $Mdocdate: March 16 2009 $
 .Dt mdoctree 1
 .Os
 .\" SECTION
@@ -26,7 +26,8 @@
 .\" SECTION
 .Sh SYNOPSIS
 .Nm mdoctree
-.Op Fl v
+.Op Fl vV
+.Op Fl f Ns Ar options...
 .Op Fl W Ns Ar err...
 .Op Ar infile
 .\" SECTION
@@ -35,12 +36,23 @@ The
 .Nm
 utility parses a BSD 
 .Dq mdoc 
-manual pages and prints its syntax tree.  The arguments are as follows:
-.Bl -tag -width "\-Werr... "
+manual pages and prints its syntax tree.  It's commonly used to see the
+syntax tree of a document when building new 
+.Xr mdoc 3
+utilities.  The arguments are as follows:
+.Bl -tag -width XXXXXXXXXXXX
 .\" ITEM
 .It Fl v
 Print verbose parsing output.
 .\" ITEM
+.It Fl V
+Print version and exit.
+.\" ITEM
+.It Fl f Ns Ar option...
+Override default compiler behaviour.  See 
+.Sx Compiler Options
+for details.
+.\" ITEM
 .It Fl W Ns Ar err...
 Print warning messages.  May be set to 
 .Fl W Ns Ar all
@@ -64,6 +76,7 @@ which may be 
 for stdin.
 .El
 .\" PARAGRAPH
+.Pp
 The
 .Nm
 utility is a formatting front-end for
@@ -74,20 +87,55 @@ input, documented at
 .Xr mdoc 7
 and
 .Xr mdoc.samples 7 ,
-into an abstract syntax tree.
+into an abstract syntax tree.  By default, it reads from stdin and
+prints the syntax tree to stdout.
 .\" PARAGRAPH
 .Pp
-By default,
-.Nm
-reads from stdin and prints the syntax tree to stdout.
-.\" PARAGRAPH
-.Pp
 .Ex -std mdoctree
+.\" SUB-SECTION
+.Ss Compiler Options
+Default compiler behaviour may be overriden with the
+.Fl f
+flag.  The available options are as follows:
+.Bl -tag -width XXXXXXXXXXXX -offset XXXX
+.It Fl f Ns Ar ign-scope
+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
+As with the
+.Fl W
+flag, multiple
+.Fl f
+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
-is
-.Ud
+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
 To validate this manual page:
@@ -97,6 +145,7 @@ To validate this manual page:
 .\" SECTION
 .Sh SEE ALSO
 .Xr mdocterm 1 ,
+.Xr mdoclint 1 ,
 .Xr mdoc.samples 7 ,
 .Xr mdoc 7 ,
 .Xr mdoc 3
@@ -105,7 +154,7 @@ To validate this manual page:
 The
 .Nm
 utility was written by 
-.An Kristaps Dzonsons Aq kristaps@kth.se .
+.An Kristaps Dzonsons Aq kristaps@openbsd.org .
 .\" SECTION
 .Sh CAVEATS
 See