[quote=@DungeonMaster]
And I don't quite understand what you mean by content that is allowed. If you mean what specific parts of DnD3.5 are allowed, well, some parts. I will be using the same base classes and monsters, same base skills and feats, weapon damage, etc. But you are free to build your own nations/religions in your character's story.

[/quote]

 He probably means what supplements are allowed to build characters. Oh, also interested.