Text Comparison is a typical example of a tool in which, when you enter a pericope or range of verses, the tool starts where you request but provides continuous scrolling. I like this behavior BUT as the contents of the reference box changes with scrolling I can get a bit confused as to the limits of my original request. Therefore, I would like to see lines, similar to the purple line below, marking the beginning and ending of my original request. And I would like this implemented across all tool with this behavior.
