I've looked through the Bilbo page and can't find it. Many RSI sufferers report that they feel less pain when typing compared to when mousing. Thus, a desire to avoid mouse as much as possible. Below are some tips from Susan Fulton Alan Cantor Microsoft Shortcuts on how to survive in Windows 95 without the mouse.
More tips are welcome.
Also puts a checkmark or big dot in a little box or circle for you to check one of several options. Hitting Enter with a program icon selected will open the program. It appears highlighted from the heavier line around it, or it might look like a depressed button. Hitting a letter key will take you to the first item in a dialogue box that begins with that letter. This can save a whole lot of hand action.