man-pages/man1/colcrt.1.html
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<H1>COLCRT</H1>
Section: User Commands (1)<BR><A HREF="#index">Index</A>
<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
<BR>BSD mandoc<BR>
<A NAME="lbAB">&nbsp;</A>
<H2>NAME</H2>
<B>colcrt</B>
- filter nroff output for CRT previewing
<A NAME="lbAC">&nbsp;</A>
<H2>SYNOPSIS</H2>
<B></B>
[-
]
[-<B>2</B>
]
[<I>file ...</I>
]
<A NAME="lbAD">&nbsp;</A>
<H2>DESCRIPTION</H2>
The
<B></B>
utility provides virtual half-line and reverse line feed sequences
for terminals without such capability, and on which overstriking
is destructive.
Half-line characters and underlining (changed to dashing `-')
are placed on new lines in between the normal output lines.
<P>
The following options are available:
<DL COMPACT>
<P>
<DT id="1"><B>-
</B>
<DD>
Suppress all underlining.
This option is especially useful for previewing
<I>allboxed</I>
tables from
<A HREF="/cgi-bin/man/man2html?1+tbl">tbl</A>(1).
<DT id="2"><B>-2</B>
<DD>
Cause all half-lines to be printed, effectively double spacing the output.
Normally, a minimal space output format is used which will suppress empty
lines.
The program never suppresses two consecutive empty lines, however.
The
-<B>2</B>
option is useful for sending output to the line printer when the output
contains superscripts and subscripts which would otherwise be invisible.
</DL>
<P>
<A NAME="lbAE">&nbsp;</A>
<H2>ENVIRONMENT</H2>
The
<B>LANG , LC_ALL</B>
and
<B>LC_CTYPE</B>
environment variables affect the execution of
<B></B>
as described in
<A HREF="/cgi-bin/man/man2html?7+environ">environ</A>(7).
<A NAME="lbAF">&nbsp;</A>
<H2>EXIT STATUS</H2>
Ex -std
<A NAME="lbAG">&nbsp;</A>
<H2>EXAMPLES</H2>
A typical use of
<B></B>
would be
<PRE>
tbl exum2.n | nroff -ms | colcrt - | more
</PRE>
<A NAME="lbAH">&nbsp;</A>
<H2>SEE ALSO</H2>
<A HREF="/cgi-bin/man/man2html?1+col">col</A>(1),
<A HREF="/cgi-bin/man/man2html?1+more">more</A>(1),
<A HREF="/cgi-bin/man/man2html?1+nroff">nroff</A>(1),
<A HREF="/cgi-bin/man/man2html?1+troff">troff</A>(1),
<A HREF="/cgi-bin/man/man2html?1+ul">ul</A>(1)
<A NAME="lbAI">&nbsp;</A>
<H2>HISTORY</H2>
The
<B></B>
command appeared in
BSD 3.0
<A NAME="lbAJ">&nbsp;</A>
<H2>BUGS</H2>
Should fold underlines onto blanks even with the
`-
'
option so that
a true underline character would show.
<P>
Cannot back up more than 102 lines.
<P>
General overstriking is lost;
as a special case
`|'
overstruck with
`-'
or underline becomes
`+'
<P>
Lines are trimmed to 132 characters.
<P>
Some provision should be made for processing superscripts and subscripts
in documents which are already double-spaced.
<P>
Characters that take up more than one column position may not be
underlined correctly.
<P>
<HR>
<A NAME="index">&nbsp;</A><H2>Index</H2>
<DL>
<DT id="3"><A HREF="#lbAB">NAME</A><DD>
<DT id="4"><A HREF="#lbAC">SYNOPSIS</A><DD>
<DT id="5"><A HREF="#lbAD">DESCRIPTION</A><DD>
<DT id="6"><A HREF="#lbAE">ENVIRONMENT</A><DD>
<DT id="7"><A HREF="#lbAF">EXIT STATUS</A><DD>
<DT id="8"><A HREF="#lbAG">EXAMPLES</A><DD>
<DT id="9"><A HREF="#lbAH">SEE ALSO</A><DD>
<DT id="10"><A HREF="#lbAI">HISTORY</A><DD>
<DT id="11"><A HREF="#lbAJ">BUGS</A><DD>
</DL>
<HR>
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