colcrt(1) colcrt(1)NAME colcrt - filters nroff output for terminal previewing SYNOPSIS colcrt [-] [-2] [file] ARGUMENTS - Suppresses all underlining. It is especially useful for previewing allboxed tables from tbl(1). -2 Causes all half-lines to be printed, effectively double spacing the output. Normally, a minimal space output format is used that will suppress empty lines. The program never suppresses two consecutive empty lines, however. This option is useful for sending output to the line printer when the output contains superscripts and subscripts that would otherwise be invisible. file Specifies the file to be passed through the filter. DESCRIPTION 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 newlines in between the normal output lines. EXAMPLES A typical use of colcrt would be: tbl exum2.n | nroff -mm | colcrt | more LIMITATIONS Should fold underlines onto blanks even with the - option so that a true underline character would show; if we did this, however, colcrt wouldn't get rid of cu'd underlining completely. Can't 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 that are already double-spaced. FILES /usr/ucb/colcrt Executable file January 1992 1
colcrt(1) colcrt(1)SEE ALSO col(1), more(1), nroff(1), troff(1), ul(1) 2 January 1992