As a univ student, i always use this app anywhere. Sometimes it's uncomfortable to use, which is, when the content is on a different page, it's often uncomfortable to find where it is(due to So many many files). So what I'm suggesting is that when you click on that sentence or word that's related to another page, you change it to the page that's related. For example, there is the word oxidation, and when you associate it with a sentence in another page, you always change it to a page that is associated with that word.