I often input (as large as possible) epub files of literature to read together with a university educator. It is a hassle to have to split files up using calibre, but this is workable. readlang is great for frictionless reading and gathering words and phrases for memorization.
However, it doesn’t allow me to easily return to specific places in the text when preparing for or during a lesson. It misses a markup capability to be able to mark text to return to later or to add notes/questions/annotations. If we would be able to highlight text using another highlight mode (blue instead of green, for example) and readlang could make a list of these just as it does vocab with the possibility to add questions/notes/remarks etc per highlight, then it would become a very powerful tool for language study, also for students at the higher levels.
Thanks, Steve, for your consideration of this matter!