col.1: convert to mandoc

- Also fix a few typos, style and section order.
- Changed the text "800 characters per line" to "800 bytes per line" as col
  doesn't seem to support UTF-8 right now.

col.1

@@ -1,90 +1,80 @@
-.TH COL 1  col
-.SH NAME
-col - filter reverse line-feeds
-.SH SYPNOSIS
-.B col
-.RB [ \-p ]
-.RB [ \-b ]
-.RB [ \-f ]
-.RB [ \-x ]
-.RB [ \-l
-.IR num ]
-.SH DESCRIPTION
-.PP
+.Dd March 6, 2014
+.Dt COL 1
+.Os sbase
+.Sh NAME
+.Nm col
+.Nd filter reverse line-feeds
+.Sh SYPNOSIS
+.Nm
+.Op Fl bfpx
+.Op Fl l Ar num
+.Sh DESCRIPTION
 The
-.B col
-utility filter all the reverse (and half reverse) line feeds,
-as they are produced by nroff with .2C of ms(6) or by tbl(1).
-.B col
+.Nm
+utility filters all the reverse (and half reverse) line feeds,
+as they are produced by
+.Xr nroff 1
+with .2C of
+.Xr ms 6
+or by
+.Xr tbl 1 .
+.Nm
 also replaces spaces by tabs when it is possible.
 The control sequences managed by
-.B col
+.Nm
 are:
-.TP
-.B ESC-7
-reverse line-feed
-.TP
-.B ESC-8
-reverse half-line-feed
-.TP
-.B ESC-9
-forward half-line-feed
-.TP
-.B VT
-vertical-tab
-.TP
-.B SP
+.Bl -tag -width Ds
+.It ESC-7
+Reverse line-feed
+.It ESC-8
+Reverse half-line-feed
+.It ESC-9
+Forward half-line-feed
+.It VT
+Vertical-tab
+.It SP
 Space
-.TP
-.B TAB
-horizontal tab
-.TP
-.B RETURN
+.It TAB
+Horizontal tab
+.It RETURN
 Carriage return
-.TP
-.B NL
+.It NL
 New line
-.PP
+.El
+.Pp
 All the other control codes and escape sequences are removed.
-.B Col
-transform all the spaces into tabulators.
-.SH OPTIONS
-.TP
-.B \-p
+.Nm
+transforms all the spaces into tabulators.
+.Sh OPTIONS
+.Bl -tag -width Ds
+.It Fl p
 Print unknown escape sequences to the output.
-.TP
-.B \-b
+.It Fl b
 Do not print backspaces in output,
-and Print only the last overstriked character in the output.
-.TP
-.B \-f
+and print only the last overstriked character in the output.
+.It Fl f
 Allow forward half line feeds in the output.
-.TP
-.B \-x
+.It Fl x
 Do not convert spaces in tabulators.
-.TP
-.BI \-l " num"
+.It Fl l Ar num
 Increment to
-.I num
+.Ar num
 the number of lines buffered for
-.B col.
-.SH BUGS
-.PP
-.B Col
-only process text with a maximum of 256 lines with 800 characteres per line,
-although the number of lines can be modified with
-.B \-l
+.Nm
+.El
+.Sh SEE ALSO
+.Xr nroff 1 ,
+.Xr tbl 1 ,
+.Xr ms 6
+.Sh BUGS
+.Nm
+only process text with a maximum of 256 lines with 800 bytes per line,
+although the number of lines can be modified with the
+.Fl l
 option.
 When the number of lines is bigger,
 the buffer is flushed to the output,
 so new reverse line feeds can not operate in the flushed  lines.
 This implementation ignores SI and SO selection character sets,
-because it is supposed it will work only with UTF-8 strings,
+because it is supposed to work only with UTF-8 strings,
 although the UTF-8 support is missed.
-.SH SEE ALSO
-.BR nroff (1),
-.BR ms (6),
-.BR tbl(1).
-
-
-