Originally Posted by GeoffC
Instead of 10, is it possible to use A etc ? - I know that there are probably not too many instances when one would exceed 9, but .......
You read the wrong books
I have at least 5 series that exceed 10 titles in Calibre
Set the 2 digit mask now
(set 3 digits if you log daily editions).
It really is a PITA to go back and fix the Library and stored Metadata, later.