How can we tell what aspects of Starfinder are OGL? Are all mechanics OGL? Clearly setting isn't, but if equipment and deities can be considered part of setting, then they aren't OGL. Is this accurate?
There should be an OGL statement at the beginning of the book detailing what is OGL and what isn't.
The drift and skyfire are identified as product identity. Proper names (deities, places and so forth) are also "closed" content.
Mechanics are open content and can be used, provided you comply with the terms of the OGL.
Thanks.
This means distributing a digital character sheet application (say, something I'm working on for Android) will need specific permission to include stuff like equipment.