I have all my notes for medical school on goodnotes. It often happens that we have the same topic in different subjects. So it would be so great if there was a „collections“ feature where I can collect all notes regarding a certain topic from different documents without it being removed from the original document or folder.
Just like when marking certain pages of my document, there could be a function „add to collection“ and then these pages are shown when I open the collection, but also when I open the document.