Question re Control settings

There are settings like ‘Set Elevator Trim’ in which the description says “Set Trim (0,1)”. What does the (0,1) mean?

I suppose you find this is a flight_model.cfg or something similair,
As far as i know
it could mean 0 is off and 1 is on posible followed by a set off numbers at which it should set
But
It can also mean that incremental set is 0,1 par click or keypress or incremental rotation of a dialswitch.