I have it on good word that some official documentation as to the .rez plugin format will hopefully be made available by the end of next week.
It turns out that the .rez format is a slightly modified version of a .rez file format created and owned by Contraband that they licensed out to Ambrosia. Currently, there is no put-together documentation as to the plugin format. The only "documentation" of any kind as to how the format works is in the sourcecode, which they understandably are not going to release to the public.
It is going to take a little time for the folks at Contraband to put together the documentation you have all been looking for since, as I said, its all still only in the source files.
So, hang on a little while longer. The info is coming.
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Dawn of Infinity(formerly OpenEV): the open-source multi-player EV (url="http://"http://openevgalaxy.sourceforge.net")http://openevgalaxy.sourceforge.net(/url)