PENSIZE
Outputs the size of the pen as a list with two items: [Width Height]. The width item is ignored by FMSLogo.
SETPENSIZE [10 20] SHOW PENSIZE [20 20] SETPENSIZE [1 1] SHOW PENSIZE [1 1]
SETPENSIZE [10 20] SHOW PENSIZE
SETPENSIZE [1 1] SHOW PENSIZE