Changes
/* LOCATE */
: [...]
==== LOCATE x,y ====: [Moves the text cursor to the x,y location. x starts at 1 on the left and goes up to 20 (in mode 0), 40 (in mode 1) or 80 (in mode 2). y starts at 1 at the top and ends at 25 at the bottom.]
==== MASK ====