In the "Navigation" section of "What are the keyboard shortcuts?" in the help center [https://www.rememberthemilk.com/help/?ctx=basics.basics.keyboard] it lists 'h' as a shortcut to "Switch between Incomplete/Completed" with the description: "When on a list, switch between Incomplete and Completed tabs"

At first I thought this was not working for me. I would hit 'h' and nothing would happen.

Today I discovered that 'h' only works when you have NO task selected (in the right pain in the web app). If you have a task selected (also indicated by a filled-in checkmark in the left pane) then 'h' does nothing.

But if you deselect the task (eg, by hitting ESC) then 'h' works fine.

Which is interesting because clicking the 'completed' or 'incomplete' links at the top right of the list does not have such a requirement. It will auto-deselect the task you have selected and make the switch.

I personally wish 'h' worked that way, but the key sequence ESC, h works very well.

(In case anyone else notices this behavior and is confused.)