From http://devnull.sweetdanger.net/OOO/OOO_133_readme.pdf: <-- It looks like you want to read p. 34.
Factions
Described in detail on page 34.
? OOO introduces many new factions. These add a significant amount of functionality to the game. Generally, creatures are divided into different factions, so that you might see e.g. some rangers being friendly with many types of "good" creatures while killing evil ones. On the other hand, evil NPCs may be friendly towards "evil" creatures. (p 34)
? The player may gain faction with some of the new NPC factions, but might in turn lose faction with other opposing groups. Gaining factions with some groups will grant special boons to the player. (p 35) ? The player can do a quest to gain faction with all the "neutral" creature factions, which includes the
possibility to befriend them. (p 35)