many people use commenting and highlighting tool not to send comments but to make notes for themselves the problem is how it is now the more comments and highlights the whole pdf becomes painfully slow! So I suggest that you change comment to one uniformed service that creates one Notes file side by side regardless of separate comments and highlights at the moment it isn't combined and there is no way to export all comments/notes to text even more than if it isn't dealt with it is a constant problem for users in my case it force closes PDFs making it impossible to study and make notes beyond annoying for a student DEAL WITH IT NOW please!