Commit | Line | Data |
---|---|---|
8b3a6d2f BJ |
1 | .TH CR3 UCB 2/24/79 UCB |
2 | .SH NAME | |
3 | cr3 \- controlled output flow filter for crt previewing | |
4 | .SH SYNOPSIS | |
5 | .B cr3 | |
6 | [ | |
7 | name ... | |
8 | ] | |
9 | .SH DESCRIPTION | |
10 | .I Cr3 | |
11 | is a filter which allows causual examination of a continuous text | |
12 | on a soft-copy terminal. | |
13 | It normally pauses after each 23 lines of output. | |
14 | If the user then hits a carriage-return, 23 more lines are displayed. | |
15 | If the user hits control-d, | |
16 | 11 more lines are displayed (a `scroll'). | |
17 | .PP | |
18 | It is also possible to type positive numbers to | |
19 | .I cr3 | |
20 | causing that | |
21 | many lines to be printed, or negative numbers causing that many lines | |
22 | to be discarded followed by a scroll. | |
23 | .PP | |
24 | The terminal is set to | |
25 | .I noecho | |
26 | mode by this program so that the output can be continuous. | |
27 | The numbers and carriage returns you type will thus not show on your terminal. | |
28 | .PP | |
29 | .DT | |
30 | A sample usage of | |
31 | .I cr3 | |
32 | in previewing | |
33 | .I nroff | |
34 | output would be | |
35 | .PP | |
36 | nroff \-ms +2 doc.n | cr3 | |
37 | .SH AUTHOR | |
38 | William Joy | |
39 | .SH ETYMOLOGY | |
40 | .I Cr3 | |
41 | has its unusual name because Charles Haley | |
42 | implemented such a feature, | |
43 | which was enabled by | |
44 | .DT | |
45 | .PP | |
46 | stty cr3 | |
47 | .SH BUGS | |
48 | The function of | |
49 | .I cr3 | |
50 | should be done optionally by the teletype driver in the system, | |
51 | akin to the ``more'' feature of the ITS systems at MIT. | |
52 | .s3 | |
53 | It should be possible to scan forward throwing away or keeping | |
54 | output ala `/pattern'. |