| This template is used on 3,000+ pages.
To avoid large-scale disruption and unnecessary server load, any changes should first be tested in the template sandbox or a user subpage. The tested changes can then be added in one single edit to this template. Please consider discussing any changes on the talk page before implementing them.
This template categorizes a book in up to 10 categories, plus the book category (this is automatic). The book category can be modified by setting the
bookcategory variable. You can also use this on subpages of a book and it will only add the book category.