[68020/68030 and 68040/68060 REGISTERED VERSIONS ONLY]

This option causes LZX to use its "maximum compression" mode; this mode is
completely output compatible with LZX's other compression modes.  In this
case, the compression parameters have been tweaked to provide the maximum
possible compression, at the complete and utter expense of speed.

The improvement in compression from the -3 to the -9 mode is invariably
1.5 to 3 times larger than the improvement from the -2 (the default) to
the -3 mode.

However, the -9 mode is between 2 and 8 times as slow as the default
compression rate, depending on the type of file being compressed.  The
decompression speed is unaffected, and is as fast as ever for files
compressed with the -9 mode.

The -9 version is provided for distribution-type applications, where the
data is compressed once (usually on a fast machine!) and is then
distributed online or on disk.  The -9 mode is slow enough that it is
impractical for casual day-to-day use, but is useful when the absolute
maximum degree of compression must be attained.

Typical applications for the -9 mode are recompressing BBS file
directories to save disk space and make files smaller for users to
download; to distribute online magazines; to distribute FidoNet
nodelists; or to cram as much software as possible onto a disk.

The  Benchmarks  section contains test data using the -9 option.


This option is valid with the following commands:

   a (add)
   u (update)