slot create-book-pages, create-reference-pages, and create-reference files in utils for deprecation
slot create-book-pages, create-reference-pages, and create-reference files in utils for deprecation

tang-junjie/llthw,LispTO/llthw,tang-junjie/llthw,tang-junjie/llthw,LispTO/llthw,LispTO/llthw