The routine gSuspendDevice() suspends output to the currently nominated device. This may result in the device remaining in graphics mode or the window remaining on the screen as appropriate to the device. gSuspendDevice() is useful if control is required to be temporarily suspended while output is directed to another device.
If any further pictures are to be drawn, a device must be nominated prior to calling any further GINO routines.
If a new device is nominated without a previous call to gSuspendDevice() or if gCloseGino() is called, output to the old device is terminated.
Note: Under Windows, gSuspendDevice() must be followed by a call to gCloseGino() for the window to remain on the screen.
