MUnQueueRange QueueNumber.w,FirstItem.w,LastItem.w[,BitmapNumber.w] ; UnQueue a range of queued objects

Does the same as MUnQueue except that it allows you specify a range of items in
the queue. Items are placed in the queue in the order you design and will be
numbered from 0 upwards. Once the range of items (which may be only one item) has
been un-queued, perhaps with a clearscreen on the region or a blit from a store
Bitmap, the specified chunky Queue is NOT flushed so at some point it may become
necessary to do an MFlushQueue.