[Aussie]

Thanks again for your reply BobC...

I think I was not quite clear on the topic, sorry about that.

My reader is Moon Reader+ Pro. I know about the file names stuff you mentioned. My problem is that Moon Reader does not like the apostrophe (and probably other special characters). I don't know if you know this reader but, again, this is the behaviour:

If I have a title or author's name like O'Reilly it will import the books from the folder O'Reilly but will not display in the Authors list unless I change the Author Sort to OReilly, no apostrophe.

If I have a few books from different authors I can create a Favorites with a name, say, Marilyn Monroe, and sorting by tag (Marilyn Monroe), copy those books to the Favorites folder (Marilyn Monroe). This is handy because I can open only that folder and access those books though they are from different authors.

In my case I have several mystery books tagged "Annie's Attic Mysteries" by different authors. If I create the Favorites folders with this name (Annie's...) it will create the folder, transfer the books titles inside it but I can't see them (they are in there but MR does not display them. I know they are in there because the folder exists otherwise, if it was empty, the folder would not appear) unless I create a folder - Annies - no apostrophe, and then all is well.

Nothing to do with your line of thought above. Moon Reader does not care about the file name. It looks at the book title and author sort primarily. The issue is something with this particular reader ( I haven't tried other readers).

Thanks again...