st: Where does heckprob call "ml maximize"??

[Rachel <academicgirl@gmail.com>]

I'm trying to modify heckprob.ado in a few ways and am trying to
understand the structure.  Where is ml maximize called?  It issues the
ml model call, but I don't see the call to maximize.  Is it in a
separate function that I missed?

Thanks,
Rachel
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