Document queue functions

The following functions control NaturalFax document queues:

Function	Synchronous/ Asynchronous	Description
nfxCreateQueue	Synchronous	Creates a queue for either sending or receiving documents.
nfxDestroyQueue	Synchronous	Deletes the specified document queue.
nfxEnqueueDoc	Synchronous	Adds a document to a document queue.
nfxResetQueue	Synchronous	Resets all documents in a queue to unsent.