colcrt man page on Ultrix

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colcrt(1)							     colcrt(1)

       colcrt - filter nroff output for CRT previewing

       colcrt [-] [-2] [file...]

       The  command 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.

       -  Suppresses all underlining.  It is especially useful for  previewing
	  allboxed tables from

       -2 Causes  half-lines  to  be printed, double spacing the output.  Nor‐
	  mally, 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.

       A typical use of would be:
       tbl exum2.n | nroff -ms | colcrt - | more

       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.

See Also
       col(1), more(1), nroff(1), ul(1)


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