g New Builtin Codecs</H3></A>

To add builtin support for a new compression algorithm, you can either
use the "tag-extension" trick to override the handling of the
TIFF Compression tag (see <A HREF=addingtags.html>Adding New Tags</A>), 
or do the following to add support directly to the core library:

<OL>
<LI>Define the tag value in <B>tiff.h</B>.
<LI>Edit the file <B>tif_codec.c</B> to add an entry to the
   _TIFFBuiltinCODECS array (see how other algorithms are handled).
<LI>Add the appropriate function 