st: new stata versions and local variable creation

["NEYMOTIN, FLORENCE" <neymotin@calmail.berkeley.edu>]

Hi, I had 2 questions for y'all:

(1) have there been changes between the different stata versions (7,8,9) in terms of the size of 
allowable matrices?  I.e. have they gotten larger or smaller for allowable matsizes?

(2) If you create local variables within an .ado file that calls ANOTHER .ado file, do the locals 
show up in the sub-file? On a similar note, how are they destroyed if you are repeatedly calling 
the sub-file?  I.e. suppose that you are in the file "outer.ado" and you call "inner.ado" and 
inner.ado creates the local "weird_var", then if I call inner.ado 100 times, do I have 100 copies 
of "weird_var" floating around as locals until the outer.ado exits?  (I thought they should be 
destroyed as soon as inner.ado completes, but I wanted to check.)

Thank you,
Florence
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