colcrt(1) [freebsd man page]
COLCRT(1) BSD General Commands Manual COLCRT(1) NAME
colcrt -- filter nroff output for CRT previewing SYNOPSIS
colcrt [-] [-2] [file ...] DESCRIPTION
The colcrt utility provides virtual half-line and reverse line feed sequences for terminals without such capability, and on which overstrik- ing 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 colcrt as described in environ(7). EXIT STATUS
The colcrt utility exits 0 on success, and >0 if an error occurs. EXAMPLES
A typical use of colcrt would be tbl exum2.n | nroff -ms | colcrt - | more SEE ALSO
col(1), more(1), nroff(1), troff(1), ul(1) HISTORY
The colcrt command 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. BSD
July 31, 2004 BSD
Check Out this Related Man Page
COLCRT(1) BSD General Commands Manual COLCRT(1) NAME
colcrt -- filter nroff output for CRT previewing SYNOPSIS
colcrt [-] [-2] [file ...] DESCRIPTION
The colcrt utility provides virtual half-line and reverse line feed sequences for terminals without such capability, and on which overstrik- ing 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 colcrt as described in environ(7). EXIT STATUS
The colcrt utility exits 0 on success, and >0 if an error occurs. EXAMPLES
A typical use of colcrt would be tbl exum2.n | nroff -ms | colcrt - | more SEE ALSO
col(1), more(1), nroff(1), troff(1), ul(1) HISTORY
The colcrt command 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. BSD
July 31, 2004 BSD