Board Thread:General Discussion/@comment-110.146.149.161-20150813074512/@comment-25396609-20150901214114

Each class has specific skills available to them, and many skills are similar are identical in function but go by different names dependant on class. Player options are what you're thinking of to allow more customization. For example, a character trained as a paladin might come into possesion of a spellbook normally only usable by a mage class, and have a player option in their backstory where they were had learned basic spellwork as a child and this can use magic from a spellbook.