[unix-history] / man / cr3.u

.TH CR3 UCB 2/24/79 UCB
.SH NAME
cr3 \- controlled output flow filter for crt previewing
.SH SYNOPSIS
.B cr3
[
name ...
]
.SH DESCRIPTION
.I Cr3
is a filter which allows causual examination of a continuous text
on a soft-copy terminal.
It normally pauses after each 23 lines of output.
If the user then hits a carriage-return, 23 more lines are displayed.
If the user hits control-d,
11 more lines are displayed (a `scroll').
.PP
It is also possible to type positive numbers to
.I cr3
causing that
many lines to be printed, or negative numbers causing that many lines
to be discarded followed by a scroll.
.PP
The terminal is set to
.I noecho
mode by this program so that the output can be continuous.
The numbers and carriage returns you type will thus not show on your terminal.
.PP
.DT
A sample usage of
.I cr3
in previewing
.I nroff
output would be
.PP
	nroff \-ms +2 doc.n | cr3
.SH AUTHOR
William Joy
.SH ETYMOLOGY
.I Cr3
has its unusual name because Charles Haley
implemented such a feature,
which was enabled by
.DT
.PP
	stty cr3
.SH BUGS
The function of
.I cr3
should be done optionally by the teletype driver in the system,
akin to the ``more'' feature of the ITS systems at MIT.
.s3
It should be possible to scan forward throwing away or keeping
output ala `/pattern'.
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'.