This order draws a line from a given position to the start of an arc, and then draws the arc.
Partial Arc at Given Position (GPARC)
X'E3' (LEN,
P0,
P1,
M,
START,
SWEEP)
Partial Arc at Current Position (GCPARC)
X'A3' (LEN,
P1,
M,
START,
SWEEP)