Selection/deselection methods of tool radius compensation (G138/G139/G237/G238/G239/G05)

There are five possibilities for the selection/ deselection of TRC:

G138 Direct selection/deselection of TRC (modal)
G139 Indirect selection/deselection of TRC (modal, default)
G237 Perpendicular selection/deselection of TRC (modal)
G238  Inner corner selection of TRC (modal)
G239 Direct selection/deselection of TRC without a block (modal)
G05 Tangential selection/deselection of TRC (non-modal)