PROOF(1) PROOF(1)
NAME
proof - troff output interpreter
SYNOPSIS
proof [ -mmag ] [ -/nview ] [ -F dir ] [ -d ] [ file ]
DESCRIPTION
Proof reads troff(1) intermediate language from file or
standard input and simulates the resulting pages on the
screen.
After a page of text is displayed, proof pauses for a com-
mand from the keyboard. The typed commands are:
newline Go on to next page of text.
- Go back to the previous page.
q Quit.
pn Print page n. An out-of-bounds page number means
the end nearer to that number; a missing number
means the current page; a signed number means an
offset to the current page.
n Same as pn.
c Clear the screen, then wait for another command.
mmag Change the magnification at which the output is
printed. Normally it is printed with magnifica-
tion .9; mag=.5 shrinks it to half size; mag=2
doubles the size.
xval Move everything val screen pixels to the right
(left, if val is negative).
yval Move everything val screen pixels down (up, if val
is negative).
/nview Split the window into nview pieces. The current
page goes into the rightmost, bottommost piece,
and previous pages are shown in the other pieces.
-F dir Use dir for fonts instead of /lib/font/bit.
d Toggle the debug flag.
These commands are also available, under slightly different
form, from a menu on button 3. The pan menu item allows
Page 1 Plan 9 (printed 12/27/24)
PROOF(1) PROOF(1)
arbitrary positioning of the page: after selecting pan,
press the mouse button again and hold it down while moving
the page to the desired location. The page will be redis-
played in its entirety when the button is released. Mouse
button 1 also pans, without the need for selecting from a
menu.
The m, x, y, F, /, and d commands are also available as com-
mand line options.
FILES
/lib/font/bit/* fonts
/lib/font/bit/MAP how to convert troff output fonts and
character names into screen fonts and
character numbers
SOURCE
/sys/src/cmd/proof
SEE ALSO
lp(1), gs(1), page(1)
J. F. Ossanna and B. W. Kernighan, ``Troff User's Manual''
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