 encoding scheme from ThunderScan (compression 32809),
<LI>a 2-bit encoding scheme used by NeXT (compression 32766), and
<LI>two experimental schemes intended for images with high dynamic range
(compression 34676 and 34677).
</UL>

<P>

To override the default compression behaviour define
<TT>COMPRESSION_SUPPORT</TT> and then one or more additional defines
to enable configuration of the appropriate codecs (see the table
below); e.g.

<UL><PRE>
#define	COMPRESSION_SUPPORT
#define	CCITT_SUPPORT
#define	PACKBI