PTX(1) GENIX Programmer's Manual PTX(1)
NAME
ptx - permuted index
SYNOPSIS
ptx [ option ] ... [ input [ output ] ]
DESCRIPTION
Ptx generates a permuted index to file input on file output (stan-
dard input and output default). It has three phases: the first does
the permutation, generating one line for each keyword in an input
line. The keyword is rotated to the front. The permuted file is
then sorted. Finally, the sorted lines are rotated so the keyword
comes at the middle of the page. Ptx produces output in the form:
.xx "tail" "before keyword" "keyword and after" "head"
where .xx may be an nroff or troff(1) macro for user-defined format-
ting. The before keyword and keyword and after fields incorporate
as much of the line as will fit around the keyword when it is
printed at the middle of the page. Tail and head, at least one of
which is an empty string "", are wrapped-around pieces small enough
to fit in the unused space at the opposite end of the line. When
original text must be discarded, `/' marks the spot.
The following options can be applied:
-f Fold upper and lower case letters for sorting.
-t Prepare the output for the phototypesetter; the default line
length is 100 characters.
-w n Use the next argument, n, as the width of the output line. The
default line length is 72 characters.
-g n Use the next argument, n, as the number of characters to allow
for each gap among the four parts of the line as finally
printed. The default gap is 3 characters.
-o only
Use as keywords only the words given in the only file.
-i ignore
Do not use as keywords any words given in the ignore file. If
the -i and -o options are missing, use /usr/lib/eign as the
ignore file.
-b break
Use the characters in the break file to separate words. In any
case, tab, newline, and space characters are always used as
break characters.
-r Take any leading nonblank characters of each input line to be a
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PTX(1) GENIX Programmer's Manual PTX(1)
reference identifier (as to a page or chapter) separate from
the text of the line. Attach that identifier as a 5th field on
each output line.
The index for this manual was generated using ptx.
FILES
/bin/sort
/usr/lib/eign
BUGS
Line length counts do not account for overstriking or proportional
spacing.
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