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| .\" @(#)colcrt.1 8.1 (Berkeley) 6/30/93 |
| .\" |
| .TH COLCRT "1" "September 2011" "util-linux" "User Commands" |
| .SH NAME |
| colcrt \- filter nroff output for CRT previewing |
| .SH SYNOPSIS |
| .B colcrt |
| [options] |
| .RI [ file ...] |
| .SH DESCRIPTION |
| .B colcrt |
| 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. |
| .SH OPTIONS |
| .TP |
| \fB\-\fR, \fB\-\-no\-underlining\fR |
| Suppress all underlining. This option is especially useful for previewing |
| .I allboxed |
| tables from |
| .BR tbl (1). |
| .TP |
| \fB\-2\fR, \fB\-\-half\-lines\fR |
| Causes 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 |
| option is useful for sending output to the line printer when the output |
| contains superscripts and subscripts which would otherwise be invisible. |
| .TP |
| \fB\-V\fR, \fB\-\-version\fR |
| Display version information and exit. |
| .TP |
| \fB\-h\fR, \fB\-\-help\fR |
| Display help text and exit. |
| .SH EXAMPLES |
| A typical use of |
| .B colcrt |
| would be: |
| .PP |
| .RS |
| .B tbl exum2.n \&| nroff \-ms \&| colcrt \- \&| more |
| .RE |
| .SH SEE ALSO |
| .BR col (1), |
| .BR more (1), |
| .BR nroff (1), |
| .BR troff (1), |
| .BR ul (1) |
| .SH BUGS |
| Should fold underlines onto blanks even with the |
| .B '\-' |
| option so that a true underline character would show. |
| .PP |
| Can't back up more than 102 lines. |
| .PP |
| General overstriking is lost; as a special case '|' overstruck with '\-' or |
| underline becomes '+'. |
| .PP |
| Lines are trimmed to 132 characters. |
| .PP |
| Some provision should be made for processing superscripts and subscripts in |
| documents which are already double-spaced. |
| .SH HISTORY |
| The |
| .B colcrt |
| command appeared in 3.0BSD. |
| .SH AVAILABILITY |
| The colcrt command is part of the util-linux package and is available from |
| .UR ftp://\:ftp.kernel.org\:/pub\:/linux\:/utils\:/util-linux/ |
| Linux Kernel Archive |
| .UE . |