A big thanks to Leslie Vail who has provided the GP community with a pretty comprehensive listing of the settings in Dynamics GP's dex.ini file. I've chronicled some of these settings in the past but Leslie's list is really comprehensive. I've added a link to the file here and I'll add it to the permanent download file as well.
Thanks Leslie! Also make sure to check out some of the books Leslie has co-authored at Accolade Publications.