Imagine that you are taking notes out of a 1500 pages PDF and you don’t want to go back and forth between outlined pages. You could simply make a link to that page and paste it over one/more of your notebook/s.

I have this issue because i work with european laws and every manual has a lot of pages. Sometimes instead of writing down an infinite law I prefer to go check it out instantly instead of searching manually or using multitasking in GoodNotes.