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1.1 root 1: .\" Copyright (c) 1980 Regents of the University of California.
2: .\" All rights reserved. The Berkeley software License Agreement
3: .\" specifies the terms and conditions for redistribution.
4: .\"
5: .\" @(#)colcrt.1 6.2 (Berkeley) 5/7/86
6: .\"
7: .TH COLCRT 1 "May 7, 1986"
8: .UC
9: .SH NAME
10: colcrt \- filter nroff output for CRT previewing
11: .SH SYNOPSIS
12: .B colcrt
13: [
14: .B \-
15: ] [
16: .B \-2
17: ] [
18: file ...
19: ]
20: .SH DESCRIPTION
21: .I Colcrt
22: provides virtual half-line and reverse line feed sequences
23: for terminals without such capability, and on which overstriking
24: is destructive.
25: Half-line characters and underlining (changed to dashing `\-')
26: are placed on new lines in between the normal output lines.
27: .PP
28: The optional
29: .B \-
30: suppresses all underlining.
31: It is especially useful for previewing
32: .I allboxed
33: tables from
34: .IR tbl (1).
35: .PP
36: The option
37: .B \-2
38: causes all half-lines to be printed, effectively double spacing the output.
39: Normally, a minimal space output format is used which will suppress empty
40: lines.
41: The program never suppresses two consecutive empty lines, however.
42: The
43: .B \-2
44: option is useful for sending output to the line printer when the output
45: contains superscripts and subscripts which would otherwise be invisible.
46: .PP
47: A typical use of
48: .I colcrt
49: would be
50: .PP
51: .DT
52: tbl exum2.n | nroff \-ms | colcrt \- | more
53: .SH "SEE ALSO"
54: nroff/troff(1), col(1), more(1), ul(1)
55: .SH BUGS
56: Should fold underlines onto blanks even with the
57: `\fB\-\fR'
58: option so that
59: a true underline character would show; if we did this, however,
60: .I colcrt
61: wouldn't get rid of
62: .I cu'd
63: underlining
64: completely.
65: .PP
66: Can't back up more than 102 lines.
67: .PP
68: General overstriking is lost;
69: as a special case `|' overstruck with `\-' or underline becomes `+'.
70: .PP
71: Lines are trimmed to 132 characters.
72: .PP
73: Some provision should be made for processing superscripts and subscripts
74: in documents which are already double-spaced.
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