Output a permuted index, including context, of the words in the
input files.
With no FILE, or when FILE is -, read standard input.
Mandatory arguments to long options are mandatory for short
options too.
-A, --auto-reference
output automatically generated references
-G, --traditional
behave more like System V 'ptx'
-F, --flag-truncation=STRING
use STRING for flagging line truncations. The default is
'/'
-M, --macro-name=STRING
macro name to use instead of 'xx'
-O, --format=roff
generate output as roff directives
-R, --right-side-refs
put references at right, not counted in -w
-S, --sentence-regexp=REGEXP
for end of lines or end of sentences
-T, --format=tex
generate output as TeX directives
-W, --word-regexp=REGEXP
use REGEXP to match each keyword
-b, --break-file=FILE
word break characters in this FILE
-f, --ignore-case
fold lower case to upper case for sorting
-g, --gap-size=NUMBER
gap size in columns between output fields
-i, --ignore-file=FILE
read ignore word list from FILE
-o, --only-file=FILE
read only word list from this FILE
-r, --references
first field of each line is a reference
-t, --typeset-mode - not implemented -
-w, --width=NUMBER
output width in columns, reference excluded
--help display this help and exit
--version
output version information and exit
