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				 AA Tables Information 
 I was looking into working on flushing out a complete list of AAs in my database.   However, I cannot seem to find any detailed documentation on the columns of the 5 AA tables, and where the data in them comes from.   Some of them are fairly self-explanatory and easy to understand, but some of them are not.   
 For example, I can't seem to find a reference to where the data for the `ability` column from aa_levels comes from.
 
 Is there any place this kind of stuff is documented?
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