Examples for longbowflag and swapflag in the A-Parameter in the SVG-path-element. The arc is drawn from the yellow to the magenta dot:

Red
Longbowflag 0, swapflag 0, code: d="M 200,200 A 100,100 0 0 0  300,300"
Green
Longbowflag 0, swapflag 1, code: d="M 200,200 A 100,100 0 0 1  300,300"
Blue
Longbowflag 1, swapflag 0, code: d="M 200,200 A 100,100 0 1 0  300,300"
black
Longbowflag 1, swapflag 1, code: d="M 200,200 A 100,100 0 1 1  300,300"
Own work
Antonsusi