After years of using calibre, I'm just reading through the manual. I’m learning much!
I learned that I can attach “data files” to a book (point 7 in
https://manual.calibre-ebook.com/gui.html#id36). By files, I don’t mean other variants of the book (such as adding the PDF version to an epub). But any other file, like audio or PNG or whatever.
Here’s my question. In the main interface of Calibre, is there an easy way to see which titles have a data file (or data folder)?
Two ideas I have, but I'm open to better/other ideas:
1. Perhaps a "data" column that has a check mark if the book has a data folder and an X if it does not.
2. Or a search term like hasdata:true and hasdata:false