info_tfgrid/heroscript/library/book_collections.md

!!mdbook.export 
    title:'Library'
    description:'ThreeFold Library'
    name:'library' 
    summary_url:'https://git.ourworld.tf/tfgrid/info_tfgrid/src/branch/main/books/library'
    collections:'library' 
    production:0 //means we put it in summary