|
A possible (sort of) solution is already widely available. Scrolling bars in many computer programs show the relative position of the viewing port (screen) with respect to the total length of the content, as well as the relative size of the portion being displayed, as the size of the "button" or "marker".
Of course, this works when there are maybe 100 "screens" in the text, but when it's 1000 or 2000 I guess the relative size is pretty useless and only the position information remains.
|