(M457: Internal Corner +X -Y)
G10 L81 P101 Q5021 (Store X position in reg 101)
G10 L81 P102 Q5022 (Store Y position in reg 102)
(Y Plus)
M288 P2 L0 (Axis Y+)
G90 G10L70 P#5220 Y[-1*[#7075/2+#7506+#7504]]
G04 P0.2(Pause)
G91 G0 Y[-1*[#25/100]] F#23(Rebound)
M109(Sensor Protection)
G90 G28.9 Y102 F#20 (Move to initial Y)
(X Minus)
M288 P1 L1 (Axis X-)
G90 G10L70 P#5220 X    [#7075/2+#7505+#7501]
G04 P0.2(Pause)
G91 G0 X[#25/100] F#23(Rebound)
M109(Sensor Protection)
G90 G28.9 X101 F#20 (Move to initial Y)
