Is anyone else here using/or know anything about Extension Developers Extension for Firefox used for creating Firefox Extensions (Add-ons) ?

If so, could someone tell me what information is needed (and what can be left out) in Extension Builder when editing the install.rdf file ?
(GUID and Version number are already there)

I know i have to make sure Firefox (not worried about T'bird & Mozilla suite) is ticked & Min / Max versions are included, but how much of the rest of that info is really needed to create the build .XPI file ?

I think i may create a Firefox Fellowship to discuss Firefox and all its different aspects.