Board Thread:The B&B/@comment-5235636-20150308112919/@comment-4273152-20150308114957

It developed very little. WH1 had none, bar a written list. From 2 onward, an artifact was used to create a compendium. As the tags for the artifacts were written, they'd appear on a master list. This method was used in various ways until the advent of the computer, introduced in 13, which made it obsolete. While the Caretaker has a natural ability to sense the current inventory, a complete physical or digital copy has always been present. You've given me an artifact or five to think about, but that's the gist of it.