/usr/bin/yodlpost: unrecognized option '--help'

Your Own Document Language: yodlpost 4.05.01
Usage: yodlpost [options] index yodlout [out]
Where:
    [options]   options. Select from
       -l linesize: maximum length of lines in the index file (default: 1000)
       -x ext: extension of the out-files if different from the extension
               of `out' itself. If omitted, and `out' has no extension,
               ypp (Yodl Post Processor) is used.
    index:      the name of the index file generated by Yodl
    yodlout:    the name of the output file generated by Yodl
    [out]:      optional name of the file generated by yodlpost,
                stdout if omitted.

The special tags in the index file are processed.
Normally, this program is run from a yodl2xxx script