text-utils/colcrt.1

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  32 .\"     @(#)colcrt.1    8.1 (Berkeley) 6/30/93
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  34 .TH COLCRT "1" "September 2011" "util-linux" "User Commands"
  35 .SH NAME
  36 colcrt \- filter nroff output for CRT previewing
  37 .SH SYNOPSIS
  38 .B colcrt
  39 [options]
  40 .RI [ file ...]
  41 .SH DESCRIPTION
  42 .B colcrt
  43 provides virtual half-line and reverse line feed sequences for terminals
  44 without such capability, and on which overstriking is destructive.
  45 Half-line characters and underlining (changed to dashing `\-') are placed on
  46 new lines in between the normal output lines.
  47 .SH OPTIONS
  48 .TP
  49 \fB\-\fR, \fB\-\-no\-underlining\fR
  50 Suppress all underlining.  This option is especially useful for previewing
  51 .I allboxed
  52 tables from
  53 .BR tbl (1).
  54 .TP
  55 \fB\-2\fR, \fB\-\-half\-lines\fR
  56 Causes all half-lines to be printed, effectively double spacing the output.
  57 Normally, a minimal space output format is used which will suppress empty
  58 lines.  The program never suppresses two consecutive empty lines, however.
  59 The
  60 .B \-2
  61 option is useful for sending output to the line printer when the output
  62 contains superscripts and subscripts which would otherwise be invisible.
  63 .TP
  64 \fB\-V\fR, \fB\-\-version\fR
  65 Display version information and exit.
  66 .TP
  67 \fB\-h\fR, \fB\-\-help\fR
  68 Display help text and exit.
  69 .SH HISTORY
  70 The
  71 .B colcrt
  72 command appeared in 3.0BSD.
  73 .SH BUGS
  74 Should fold underlines onto blanks even with the
  75 .B '\-'
  76 option so that a true underline character would show.
  77 .PP
  78 Can't back up more than 102 lines.
  79 .PP
  80 General overstriking is lost; as a special case '|' overstruck with '\-' or
  81 underline becomes '+'.
  82 .PP
  83 Lines are trimmed to 132 characters.
  84 .PP
  85 Some provision should be made for processing superscripts and subscripts in
  86 documents which are already double-spaced.
  87 .SH EXAMPLE
  88 A typical use of
  89 .B colcrt
  90 would be:
  91 .PP
  92 .RS
  93 .B tbl exum2.n \&| nroff \-ms \&| colcrt \- \&| more
  94 .RE
  95 .SH SEE ALSO
  96 .BR col (1),
  97 .BR more (1),
  98 .BR nroff (1),
  99 .BR troff (1),
 100 .BR ul (1)
 101 .SH AVAILABILITY
 102 The colcrt command is part of the util-linux package and is available from
 103 .UR https://\:www.kernel.org\:/pub\:/linux\:/utils\:/util-linux/
 104 Linux Kernel Archive
 105 .UE .