Weasel is document reader for the Palm Pilot organizers. Unlike other doc viewers for the Palm, Weasel uses zTXT files as its primary format. These are similar in many ways to the de facto standard format, PalmDoc, but they feature much better compression. Weasel also reads PalmDoc files, though, so don't worry. It even supports bookmarks in both formats. The zTXT compression is done using zLib, a Free compression library released under the zLib License. This results in much smaller files than with the PalmDoc method. For example, the Project Gutenberg e-text of "The Merry Adventures of Robin Hood" is approximately 600K in size. Compressed as a zTXT, it is only 261K in size, while with PalmDoc it is about 330K. Since the Palm Pilots do not have very much memory, this is a big savings.