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A3000 notes:
Original port by ERR99 

Porting thread
https://chdk.setepontos.com/index.php?topic=5593.0

alt button is the FACE key

A3000 has an ND filter, and does not have an adjustable aperture

This camera has little free RAM. ARAM is enabled by default, so Canon Basic
scripts should not be used without a custom, non-ARAM build.