Well looks like you come with something new.
Here's how for this "S"
G00 Z3.000000
G00 X0.000000 Y0.000000
G01 Z-0.500000
G01 X30.040545 Y0.000000 Z-0.500000
G01 X41.001286 Y14.606557 Z-0.500000
G01 X41.001286 Y43.413935 Z-0.500000
G01 X-10.148833 Y43.413935 Z-0.500000
G01 X-10.148833 Y73.032787 Z-0.500000
G01 X1.623813 Y88.856557 Z-0.500000
G01 X30.446499 Y88.856557 Z-0.500000
G01 X39.377472 Y76.684426 Z-0.500000
G00 Z3.000000
G00 X-10.148833 Y14.606557
G01 Z-0.500000
G01 X0.000000 Y0.000000 Z-0.500000
G00 Z3.000000
First sentance this is where your tool starts so 3mm from the surface of material, G00 means rapid motion so tool will go from any point in space to z=3,x=0,y=0 fast. Then turn on G01 wich is working mode, each position is written only once, so only new positions are written, then go to the depth of -0.5 ,and then in counter clockwise (my decision) way to every way point... and finnished where started. So yeah easy
