I remember when people didn't know how to open/close the clock interface starting out.
Or that you can Mass buy by Ctrl+Left Clicking
It took me awhile to find that out myself. ; ;
I didn't know the Ctrl+left click to buy things until g7. Which was 7 generations longer than it should have taken me. I always used escape to quickly get out of menus so I never used the buttons to close it, which probably explains why I never noticed that you could expand it.