Back button when reading book
On Android, the back button when reading a book from the library is inconsistent. Initially it goes back to the library but if you read a few pages it will go back to the previous page and eventually to the library, but that makes it save your position on the first page that you read. I think it should just go back to the library always, otherwise it becomes mostly useless.
If you are talking about the browser's back button, then it will simply return to the pages you viewed in your current session. For a more predictable back button, please use:
1. The top left "<R" button to leave the text and return to the Readlang home page or library page (whichever page you opened the text from).
2. The left margin or bottom left "<" button to return to the previous page of the book.
I hope that helps!