look *FILEHANDLE, $key, $dict, $fold;
routine sets the file position in
to be the first line greater than or equal (stringwise) to
It returns the new file position, or -1 if an error occurs.
is true, the search is in dictionary order (ignoring
everything but word characters and whitespace). If
true, then case is ignored. The file must be sorted into the appropriate order,
flags of UNIX
(1), or the equivalent command on non-UNIX
machines. Unpredictable results will otherwise ensue.