buff = f.abuf()
F.ABUF finds a free buffer in the cache of in-core buffers, initializes it, and returns it to the caller. It there are currently no free buffers it will GETVEC, and link in a new buffer. F.ABUF does not mark the buffer busy.
This is an internal routine, not normally to be called by the user.
Copyright © 1996, Thinkage Ltd.