Using the Help in Lite Mode has an issue. There is no scroll bar and I can not scroll using the touchpad of my T61 (dunno, may be a driver prob). Only the arrow keys work. There should be a scroll bar as in Full Mode. You can change the sidebar panels to switch off day-at-a-glance when looking at the help topics to get a better overview. But when a user opens the help for the first time, he does probably not know that. So he lives with a very small part of the window holding these help topics. Maybe it is smarter to use the full height of the sidebar and not show all parts like in Full Mode. Meaning to show either day-at-a-glance or help topics or (warning! Enhancement request)
show the help topics like the preferences in a new tab. There would be much space to read the help topics due to this new tab mostly without the need to scroll and with the great possibilty to leave the tab opened all the time to find any topics. The sidebar would be free of the help topics and you could place a todo part in the sidebar instead. Just thinking. 