null? NA?

I'm super confused what the variable is for a no value.

in microstudio, most variables will default to 0 if not given one. the only other time I've seen otherwise is if you just put print() without anything in the box and will just return "undefined" in the console

In microScript, there is no explicit null or undefined value for things like uninitialized variables, nonexistent properties, and functions that don't return a value. 0 is used instead.