BTN_TOOL_MOUSE
sc->sc_tool[0] = BTN_TOOL_MOUSE;
if (sc->sc_tool[0] == BTN_TOOL_MOUSE)
sc->sc_tool[0] = BTN_TOOL_MOUSE;
if (sc->sc_tool[0] == BTN_TOOL_MOUSE)
BM_SET_BIT(sc->sc_bm[1], BTN_TOOL_MOUSE);