parameter configurable in Admin > Settings > Advanced.
You specify the scaling factor. Normally, images fill the stage; 0 ->
never scale up; any other positive number S --> scale up to S times
the original size of the photo (but never bigger than the stage)
Install: <module>_installer::install() is called, any necessary tables
are created.
Activate: <module>_installer::activate() is called. Module
controllers are routable, helpers are accessible, etc. The module is
in use.
Deactivate: <module>_installer::deactivate() is called. Module code
is not accessible or routable. Module is *not* in use, but its tables
are still around.
Uninstall: <module>_installer::uninstall() is called. Module is
completely removed from the database.
Admin > Modules will install and activate modules, but will only
deactivate (will NOT uninstall modules).