Problems with ln.1:

Parenthesized comments in command synopsis.  This is impossible
to translate to DocBook.

--- ln.1-unpatched	2012-06-28 19:08:11.104797083 -0400
+++ ln.1	2012-06-28 19:08:38.520796573 -0400
@@ -4,16 +4,16 @@
 ln \- make links between files
 .SH SYNOPSIS
 .B ln
-[\fIOPTION\fR]... [\fI-T\fR] \fITARGET LINK_NAME   (1st form)\fR
+[\fIOPTION\fR]... [\fI-T\fR] \fITARGET LINK_NAME
 .br
 .B ln
-[\fIOPTION\fR]... \fITARGET                  (2nd form)\fR
+[\fIOPTION\fR]... \fITARGET
 .br
 .B ln
-[\fIOPTION\fR]... \fITARGET\fR... \fIDIRECTORY     (3rd form)\fR
+[\fIOPTION\fR]... \fITARGET\fR... \fIDIRECTORY
 .br
 .B ln
-[\fIOPTION\fR]... \fI-t DIRECTORY TARGET\fR...  \fI(4th form)\fR
+[\fIOPTION\fR]... \fI-t DIRECTORY TARGET\fR...
 .SH DESCRIPTION
 .\" Add any additional description here
 .PP