gBASIC. `help` for prompt commands, `quit` to leave.
> type("Ada")
string
> type(37)
number
> type(true)
boolean
> true
true
> false
false
> type(len("Ada"))
number
> 3 + 4
7
> "3" + "4"
34
> "3" + 4
34
> 1 + "2"
12
> "a" - "b"
runtime error at <prompt>:1:5: arithmetic operator '-' expected number but got string
> print("still here")
still here
> quit
Your program was not saved; `recover` will bring it back next time.
