I sometimes forget to close sections after I have used them and suggest an option that would always start PG and Explorer with all the sections closed.
Related Suggestion: Idle time population of closed sections.
I close all the sections because I don’t like to wait for all of them to populate at once. However, it does take time to work my way through each section, time when I am reading something for example, and during this time my system is basically doing nothing. Why not put it to work populating closed sections so that when I get to them the results pop up instantaneously?