I think the Zotero PDF reader has a lot of similar features that make the experience of reading papers much better:
It has a back button so that when you click on a reference link that takes you to the references section, you can easily click the button to go back to the text.
There is a highlight feature so that you can highlight parts of the text which is convenient when you want to come back and skim the paper later.
There is a “sticky note” feature allowing you to leave a note in part of the paper to explain something.
I think the Zotero PDF reader has a lot of similar features that make the experience of reading papers much better:
It has a back button so that when you click on a reference link that takes you to the references section, you can easily click the button to go back to the text.
There is a highlight feature so that you can highlight parts of the text which is convenient when you want to come back and skim the paper later.
There is a “sticky note” feature allowing you to leave a note in part of the paper to explain something.