The ROTATE command is used to apply a rotation to subsequent drawing operations. The rotation is relative to
any existing rotations that are in effect.
You would normally issue a GSAVE command before using the ROTATE command. Likewise you would
normally use the GRESTORE command to reset the rotation once you have finished.
SETCOLOR 0,0,0 // BLACK
DIM I AS INTEGER
FOR I=0 TO 359 STEP 30
DRAWSTRING "Angle=" + STR$(I), 40, 0