How to collapse and expand the Table of Contents from the "Go To" menu? Last night I accidentally discovered that the TOC can be expanded for quick jumping using the goto icon. I had hard time to find the way to collapse the expanded chapters/sections how ever I accidentally manage to collapse it by clicking random places (but I guess I clicked repeatedly on "Contents" tab) but not sure how exactly it is done.
I forgot to mention that all the sub sections in TOC was auto expanded (I am sure I did not expanded individual section by clicking the triangle). I know that I can collapse it by clicking on the triangle again on individual section but there must be something to collapse and expand all at once.