A family of Microsoft word processing software products for creating web, email, and print documents.
- Construction of scroll bars has been commandeered by Apple. If you're among the multitude dissatisfied with what they've done, don't hesitate to let them know :-) There is nothing in the programs that will restore the former structure or functionality.
- Since you mention the fn key I'm assuming that you don't have a full keyboard so fn+Up/DnArrow combination evokes PageUp/PageDown. That basically navigates on the basis of one screen (what fits in the window). It's not realy "random" but there are a number of variables involved such as font size, window size, Zoom, etc.
Include the Command key in the combination [i.e., fn+Command+Up/DnArrow] to go from the top of one page directly to the top of the next. For more navigation keyboard shortcuts as well as those for other purposes, see Word Help on the topic.