How to precisely identify quests?

[Sine Pi]

I can get a quest title and level requirement using GetQuestLogTitle(). But sometimes two different quests (in a chain, likely, but still) have the same title and the same level - and I still need to tell them apart.

I've thought of making some hash out of the quest intro text, but that seems like overkill...

Any ideas..?

[Rowaa]

Better use objectives, as quest intro may have character name. This is, of course, not portable between different client languages.