|COLCRT(1)||General Commands Manual||COLCRT(1)|
colcrtutility 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).
- 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.
-2option is useful for sending output to the line printer when the output contains superscripts and subscripts which would otherwise be invisible.
LC_CTYPEenvironment variables affect the execution of
colcrtas described in environ(7).
colcrtutility exits 0 on success, and >0 if an error occurs.
EXAMPLES¶A typical use of
tbl exum2.n | nroff -ms | colcrt - | more
SEE ALSO¶col(1), more(1), nroff(1), troff(1), ul(1)
colcrtcommand appeared in 3.0BSD.
BUGS¶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.
|July 31, 2004||Linux 4.19.0-6-amd64|