There are new snapshots for client and server in the snapshot directory, containing the changed files... I have written 3 new perl modules: cbh_code.pl cbh_decode.pl wordcount.pl These can be used stand-alone if you want to experiment (-h helps). They do context based huffman coding (based on a multilingual (English/German/Dutch) word list of 14k), + gzip + base64 coding. This is the best compression which can be achieved with plain text. Some (larger) files compress 6x (leaving only 16% of the size), some (like .jpg pics) do not compress at all, as they have a very high entropy factor... Words are coded with 2 (256 most used) or 3 bytes. Unknown words are just inserted into the data stream without coding. The resulting message is then gzipped and b64 coded for transport through pskmail. At a later stage I will upgrade to b127 coding, which will be 12.5% better, but for that we need a better interface to gMFSK. I have changed the meaning of the Download button: If you type the mail number into the text input field a the bottom it compresses and downloads that mail in compressed form. If you type a filename and click the download button. The system tries to compress and download that file from the ~/pskdownload directory of the server. The Read button works the same way with noncompressed info. I have added a progress indicator to the GUI. The wiki pages (client installation -> add ~/mail/downloads dir, and client operation) have been adapted to the new situation (the installation procedures still have to be adapted). 73, Rein PA0R