Goodreads Librarians Group discussion

I've come across quite a few mainstream fiction books that in the title will say "UC Exp ______" (the line for title) or "OP ______"

Does anyone know what those letters/abbreviations mean? And do they have to stay in the title?

OP is possibly "out of print". The one I found--"UC CANCELLED Exp"--looked like a typing error. These inserts probably come over from amazon.com marketplace sellers, and it's likely they should be deleted.

Exp is most likely "Export" (I've seen it on other books in other contexts) but I don't know what the UC would stand for...

And do they have to stay in the title?

Regardless of what they mean (and I think Squirrel and Michael are probably both right), I don't think they should stay in titles. I think Squirrel is right about the source, too.

OP is definitely publisher's abbreviation for "out of print."

Thanks :) I'll go back and take them out of the titles.