I searched the forum for reference to this software and could not find it. Forgive me if this is old news. I found this Software via a Google search. It's called E-Trac Manager It is a full replacement for the E-Trac Exchange software that comes with the E-Trac. It has a very nice GUI and is capable of editing mask patterns as well as user modes, and universal settings. There is a standalone pattern editor you can download, but this, as mentioned is built into the main program. This is free program. The software is currently in development. I have downloaded and tested it. It works well, and is worth a look.
http://etracman.ic.cz/