Appreciate your support of the project. (I'm one of the main writers.)
What do you mean by a pdf library system? Like bookmarks? We can look at integrating that into our PDFs.
Thanks again!
no what I meant was, in itch.io and dtrpg you get an access to the downloads purchased through your accounts digital library. Some publishers lacks such options when they publish digital products through their website. You'd usually be left with set numbers of download via email links and that's about it.