I have several books that I have found to be duplicates. When I right-click on them delete shows up but is greyed out and non functional.
How do I ,delete them?
https://sites.google.com/a/oldpaths.org.uk/oldpaths-the-sword-of-the-spiritthe-word-of-god--eph-617b/personal-books/jamesroberts-docx
You can't completely delete them ... you can however hide them.
Orthodox Bishop Hilarion Alfeyev: "To be a theologian means to have experience of a personal encounter with God through prayer and worship."
You can create new books over the top of them.