I've noticed that there are a lot of subsystems for various things in the Pathfinder rules, and I was wondering if there was any sort of index for them, short of checking to see what's been added to the PRD or d20PFSRD.
"Subsystems" are what I call aspects of the game rules that cover a specific that are (semi-)complete unto themselves, with only modest connection to the wider game rules. Things like the weapon creation rules from the Weapon Master's Handbook or the "hexploration" rules from Ultimate Campaign. There seem to be a lot of these minor rules systems for adjudicating specifics aspects of play, but for the most part they can be difficult to find unless you already know what you're looking for.
Is there any repository of these and where to find them?
