What are the pros and cons for keeping the code portion of BISAC subject headings as tags?
An example of a BISAC subject heading is FIC022020 FICTION / Mystery & Detective / Police Procedural. What I call the "code portion" in this case is "FIC022020".
There are quite a number of tags in my library that have just the "code portion" (FIC022020) without the "human-understandable" portion (FICTION / Mystery & Detective / Police Procedural).
What are your thoughts on deleting these tags that are just the code portion?
There doesn't seem to be a plugin that can convert code-portion-only tags to the human-understandable subjects. (I checked
https://plugins.calibre-ebook.com/).
If there were a way to quickly make such a conversion, that would enrich my tags.