info_tfgrid/heroscript/earthhub/book_collections.md

!!mdbook.export 
    title:'Earth Hub' 
    name:'earthhub' 
    description:'Welcome to Earth Hub'
    summary_url:'https://git.ourworld.tf/tfgrid/info_tfgrid/src/branch/main/books/earthhub'
    collections:'earthhub, social_media_protocols, p2p, def, tech' 
    production:0 //means we put it in summary