The highlight function should allow users to alter the words highlighted without having to delete the entire highlight and start over. For example, assume highlight 3/4 of a page and then realize I want to include or exclude one word on either end of the highlighted text. Currently, my only option is to delete the entire highlight and start over. This is cumbersome and time consuming. Users should be able to click and drag the highlighted text to change the words highlighted without having to start over.