In 'General Reference Filing' PDF (free downloads from David) it says:
"The ultimate filing system files by number with a computerized crossreference database that tags topics with specific files."
What does that mean? Can someone elaborate on such a system? Are we talking about a system similar to a library reference system (681 = plants, 681.1 = indoor plants)?
Or is it just numbers from 1 to x and you rely on your crossreference database to know where something is?
Thanks in advance.