The Channel Energy section states that a good cleric can channel positive energy which either harms undead or heals living creatures.
Later in the section it states;
Once this choice is made, it cannot be reversed.
This statement is preceded by;
A neutral cleric of a neutral deity (or one who is not devoted to a particular deity) must choose whether she channels positive or negative energy.
So I'm assuming the first statement is referring ONLY to that neutral cleric statement. Am I correct?
Basically my question is; Can a good cleric use channel energy to heal living creatures on a given round and then again to harm undead in another round? (and vice versa for an evil cleric)