Iendtifying what the autotasks do

Hi,
Oracle 11.1.0.6.0
In dba_auto_task_client I can see a few client_names:
auto optimizer stats collection
auto space advisor
sql tuning advisor

How do I work out exactly what jobs and what code these run?

For example I assume that the optimizer one runs GATHER_STATS_PROG, but I
cannot verify that.

-- 
Regards

Pete

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