Good points. I like pedantry
Yes, one can find AOO in the optional supplements.
I only used the withdraw rules when actively engaged with an enemy. So if fighter #1 is fighting orc #1 they needed to withdraw but if orc #2 hasn't made an attack on the ranger the archer can get away from the group. So you can't say I attack the orc and then retreat (unlike the 5th ed thief) but you can say -- I run to the corner and knock an arrow. If orc #2 decides to follow the ranger the ranger would have to use a melee weapon.
To me this was the best interpretation of the rules because I always thought that a full movement consumed a full round and adding free attacks to that loss of round would prevent archers and mages from being viable classes.
