Need clarification on DB items

[Arcalyn]

I'm tryin to figure out a way to clean the (spawn)database, getting sick of seeing 3 Guntriks,4 priests of discord and bout 10 of those butterflies in kelethin! heeheh

Anyones suggestions on a progy to use would be welcomed.

BUT.......I NEED......Clarification......PLEASE......

What is the order for the NPCs into the database.....what I mean is.............

first ya need an:
NPC (a_ugly_arcalyn, 42, 2334,12 3242 blah blah) <NPC>
then ya need: ?????
Spawngroup (2353,'fearplane') <WHICH ZONE>
then maybe: ?????? what does this do? other than %chance to spawn
Spawnentry (point-to-spawngroup, point-to-NPC_type, %) <????>
then: ????
Spawn2 (values) <SET WHO AND WHERE to spawn>

^ not worried about the loot/faction part of this yet just the above ^

Basically I'm asking what are these for?
Obviously don't answer the ones I have figured out correctly =)

NPC_type - to define the npc and its traits/abilities/skills.

Spawngroup - selects the NPC_type and NOCLUE?

Spawnentry - Looks like it just combines but what?

Spawn2 - to specify the location of the NPC to spawn.

No guesses from the peanut gallery, please.....just info from a DEV when they get time.

I need to understand those in order to clean up the database;
I have got boat loads of time at work to organize the HQ_spawn.sql database.