Among issues, I can point to two: Usually I should scroll down to the end to see references and then back to top to continue reading, life could be a lot easie

Among issues, I can point to two: Usually I should scroll down to the end to see references and then back to top to continue reading, life could be a lot easier if readers could parse references and show them in the sidebar or split the view so I could scroll down the bottom pane. I can not repeatedly select a portion of text, move to toolbar, click on Annotation, select Highlight, in order to highlight a sentence! I wish readers had better support for keyboard or at least used modern UI/UX techniques.