1000 ----- printf (stdio.pvvs)
1001 ----- print number from stack (stdio.pvvs)
1010 ----- stackrotate (stack.pvvs)
+ 1011 ----- stackrotatereverse (stack.pvvs)
010xxx - math functions
10000 ----- random (math.pvvs)
10001 ----- absolute value (math.pvvs)