This is where I have been getting the information that prompted looking into things further.
http://www.wowwiki.com/Events_that_f...oading_Process
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Saved variables loading
After the addon code has been loaded, the loading process can be followed by registering for various events, listed here in order of firing.
1.ADDON_LOADED
This event fires whenever an AddOn has finished loading and the SavedVariables for that AddOn have been loaded from their file.
2.SPELLS_CHANGED
This event fires shortly before the PLAYER_LOGIN event and signals that information on the user's spells has been loaded and is available to the UI.
3.PLAYER_LOGIN
This event fires immediately before PLAYER_ENTERING_WORLD.
Most information about the game world should now be available to the UI.
All Sizing and Positioning of frames is supposed to be completed before this event fires.
AddOns that want to do one-time initialization procedures once the player has "entered the world" should use this event instead of PLAYER_ENTERING_WORLD.
4.PLAYER_ENTERING_WORLD
This event fires immediately after PLAYER_LOGIN
Most information about the game world should now be available to the UI. If this is an interface reload rather than a fresh log in, talent information should also be available.
All Sizing and Positioning of frames is supposed to be completed before this event fires.
This event also fires whenever the player enters/leaves an instance and generally whenever the player sees a loading screen
5.PLAYER_ALIVE
This event fires after PLAYER_ENTERING_WORLD
Quest and Talent information should now be available to the UI
Until 3.0, VARIABLES_LOADED used to fire upon completion of the addon loading process; since 3.0, it is fired in response to CVars, Keybindings and other associated "Blizzard" variables being loaded, and may therefore be delayed until after PLAYER_ENTERING_WORLD. The event may still be useful to override positioning data stored in layout-cache.txt
[edit] Load On Demand behavior Load on Demand addons cannot rely on most of the event sequence being fired for them; only ADDON_LOADED is a reliable indication that the saved variables for your LoD addon have been loaded.
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