DECLARE SUB DQBclose ()none
This function deallocates the EMS memory used by the layers initialized by DQBinit, turns off the keyboard interrupt handler and the sound engine if they were on; it also deallocates the blender maps if they were created, and does other closing stuff you may have forgot. DQBclose must always be called before ending your programs, otherwise allocated EMS memory will be lost, and you'll have to reboot your computer to free it.
If already in graphics mode, this function also automatically switches the screen to plain text mode, so you don't have to worry about calling DQBinitText before it. See also DQBinit.