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colcrt
Langue: en
Version: 330247 (ubuntu - 24/10/10)
Section: 1 (Commandes utilisateur)
BSD mandoc
NAME
colcrt - filter nroff output for CRT previewingSYNOPSIS
[- ] [-2 ] [file ... ]DESCRIPTION
The 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.The following options are available:
- -
- Suppress all underlining. This option is especially useful for previewing allboxed tables from tbl(1).
- -2
- 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 -2 option is useful for sending output to the line printer when the output contains superscripts and subscripts which would otherwise be invisible.
ENVIRONMENT
The LANG , LC_ALL and LC_CTYPE environment variables affect the execution of as described in environ(7).EXIT STATUS
Ex -stdEXAMPLES
A typical use of would betbl exum2.n | nroff -ms | colcrt - | more
SEE ALSO
col(1), more(1), nroff(1), troff(1), ul(1)HISTORY
The command appeared in BSD 3.0BUGS
Should fold underlines onto blanks even with the `- ' option so that a true underline character would show.Cannot back up more than 102 lines.
General overstriking is lost; as a special case `|' overstruck with `-' or underline becomes `+'
Lines are trimmed to 132 characters.
Some provision should be made for processing superscripts and subscripts in documents which are already double-spaced.
Characters that take up more than one column position may not be underlined correctly.
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