# 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.