===================================================================
RCS file: /cvs/mandoc/mandoc.1,v
retrieving revision 1.99
retrieving revision 1.102
diff -u -p -r1.99 -r1.102
--- mandoc/mandoc.1	2011/11/13 14:50:54	1.99
+++ mandoc/mandoc.1	2013/03/06 08:08:24	1.102
@@ -1,6 +1,7 @@
-.\"	$Id: mandoc.1,v 1.99 2011/11/13 14:50:54 schwarze Exp $
+.\"	$Id: mandoc.1,v 1.102 2013/03/06 08:08:24 schwarze Exp $
 .\"
 .\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
+.\" Copyright (c) 2012 Ingo Schwarze <schwarze@openbsd.org>
 .\"
 .\" Permission to use, copy, modify, and distribute this software for any
 .\" purpose with or without fee is hereby granted, provided that the above
@@ -14,7 +15,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: November 13 2011 $
+.Dd $Mdocdate: March 6 2013 $
 .Dt MANDOC 1
 .Os
 .Sh NAME
@@ -23,6 +24,9 @@
 .Sh SYNOPSIS
 .Nm mandoc
 .Op Fl V
+.Sm off
+.Op Fl I Cm os Li = Ar name
+.Sm on
 .Op Fl m Ns Ar format
 .Op Fl O Ns Ar option
 .Op Fl T Ns Ar output
@@ -34,8 +38,30 @@ The
 utility formats
 .Ux
 manual pages for display.
+.Pp
+By default,
+.Nm
+reads
+.Xr mdoc 7
+or
+.Xr man 7
+text from stdin, implying
+.Fl m Ns Cm andoc ,
+and produces
+.Fl T Ns Cm ascii
+output.
+.Pp
 The arguments are as follows:
 .Bl -tag -width Ds
+.Sm off
+.It Fl I Cm os Li = Ar name
+.Sm on
+Override the default operating system
+.Ar name
+for the
+.Xr mdoc 7
+.Sq \&Os
+macro.
 .It Fl m Ns Ar format
 Input format.
 See
@@ -96,18 +122,6 @@ If multiple files are specified,
 .Nm
 will halt with the first failed parse.
 .El
-.Pp
-By default,
-.Nm
-reads
-.Xr mdoc 7
-or
-.Xr man 7
-text from stdin, implying
-.Fl m Ns Cm andoc ,
-and produces
-.Fl T Ns Cm ascii
-output.
 .Ss Input Formats
 The
 .Nm
@@ -333,7 +347,7 @@ for font style specification and available command-lin
 Translate input format into
 .Xr man 7
 output format.
-This is useful for distributing manual sources to legancy systems
+This is useful for distributing manual sources to legacy systems
 lacking
 .Xr mdoc 7
 formatters.