projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| d5baed0e KM |
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 | .\" | |
| 14140efb | 5 | .\" @(#)colcrt.1 6.2 (Berkeley) %G% |
| d5baed0e | 6 | .\" |
| dd7874f6 | 7 | .TH COLCRT 1 "" |
| d5baed0e KM |
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) | |
| d5baed0e KM |
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. |