PROOF(9.1) PROOF(9.1)
NAME
proof - troff output interpreter for jerq
SYNOPSIS
proof [ -ffonts ] [ file ]
DESCRIPTION
Proof reads troff(1) intermediate language output from file
and displays a simulation of the resulting pages on the
screen. If no file name is given and the standard input is
the terminal, proof terminates immediately leaving a `proof
layer', otherwise it reads the standard input. By invoking
proof in a proof layer you can avoid download time.
Fonts are loaded as required. The default font is used for
unknown fonts. The font option can be used to preload
fonts. Use the names of the fonts relative to
/usr/jerq/font separated by commas. The most-used fonts are
`-fR.10,I.10,S.10'.
After a layer's worth of text is displayed, proof pauses for
a command. Commands may come from the host, the keyboard,
or the button 3 menu. The typed versions of commands are:
<newline>
Go on to next portion of text. (Button 3 equivalent:
`more'.)
q Quit, leaving a proof layer.
x Exit and restart the regular terminal program. (Equiv-
alent to `q' followed by jterm(9.1).)
pn Print page n. An out-of-bounds page number means the
end nearer to that number; a missing number means page
0; a signed number means an offset to the current page.
Button 1 gets a scroll box, which represents a full page of
text. An interior rectangle shows what part of the page is
now visible. The interior rectangle moves with the mouse,
causing the layer to scroll both vertically and horizon-
tally. Button 2 gets a speedometer. The bar of the
speedometer moves with the mouse to control the rate at
which new information is displayed.
FILES
/usr/jerq/font/* fonts
/usr/jerq/font/.missing list of referenced but unconverted
fonts
PROOF(9.1) PROOF(9.1)
SEE ALSO
d202(1), font(7)
`A Typesetter-independent Troff,' Brian W. Kernighan
BUGS
There is a maximum number of fonts (currently 50) that can
be loaded at once.
Windowing can get confused if the troff ouput is not approx-
imately sorted in ascending y-order.
A proof layer imitates term 33(9.1), not mux(9.1).