Would be nice to have a 'follow' toggle button at the top of the table of contents, or right click the 'Contents' button for options.
It would auto collapse all books that you aren't currently in, and snap the current book at the top, with the current passage highlighted.
For example, if I am at Romans 1 it would auto snap to look like this:
With all other books collapsed. It would follow us around wherever we went, keeping the current book at the top, and the chapter highlighted. You wouldn't need the header name "Table of Contents" either. It could be the name of the current book as long as it's following. In my example the word "Romans" would be where "Table of Contents" is. Because the X is a close button. But the Contents button is a toggle button. That is a waste of space and redundant buttons (This idea is added to my Table Of Contents "scope" suggestion).
