NAME

colcrt − Filters text processor output for screen previewing

SYNOPSIS

colcrt [− −2] [file...]

The colcrt command filters output from text processors such as nroff so that it can be previewed on a cathode ray tube (CRT). 

OPTIONS

-Suppresses underlining; this is useful for previewing boxed tables from tbl. 

−2Causes all half-lines to be printed, effectively doublespacing the output.  This is useful when printing output with subscripts and superscripts on a line printer, where half-lines do not normally appear. 

DESCRIPTION

The colcrt command provides virtual half-linefeed and reverse linefeed sequences for terminals without such capability, and on which overstriking is destructive. The colcrt command changes underline characters to dashes and places them and half-line characters on new lines in between the normal output lines. 

NOTES

     1.colcrt cannot back up more than 102 lines. 

     2.General overstriking is lost; as a special case a | (vertical bar) overstruck with a - (dash) or _ (underline) becomes a + (plus sign). 

     3.Lines are trimmed to 132 bytes. 

EXAMPLES

The following command line illustrates a typical use of colcrt:

tbl exum2.n | nroff -ms | colcrt - | more

SEE ALSO

Commands:  col(1), deroff(1), more(1), neqn(1), nroff(1), pg(1), tbl(1), ul(1)