The exit button.
- Examples:
- ex_ButtonCount.nxc, ex_ButtonLongPressCount.nxc, ex_ButtonLongReleaseCount.nxc, ex_ButtonPressCount.nxc, ex_ButtonReleaseCount.nxc, ex_ButtonShortReleaseCount.nxc, ex_ButtonState.nxc, ex_ReadButtonEx.nxc, ex_SetButtonLongPressCount.nxc, ex_SetButtonLongReleaseCount.nxc, ex_SetButtonPressCount.nxc, ex_SetButtonReleaseCount.nxc, ex_SetButtonShortReleaseCount.nxc, and ex_SetButtonState.nxc.