This source is provided as-is for the curious.  It is the hook for
the image viewing DLL used by Excalibur.  Deliberately left out were
our color reduction and dithering.  (Hopefully the reasons for the
ommission are obvious.)  At present, I will not answer any questions
about writing a viewer DLL.  Sorry.  Just don't have the time.

We intend to support a subset of the image formats that exist, but
for proprietary formats or for those who wish to support image
formats less popular in the Windows world (like ILBM or Mac images),
this should provide a practical demonstration of the hooks needed.

Tim
