The CK accessibility help plugin displays the editor key map information in a dialog window to illustrate generic keystrokes to access each editor part, as well as the key bindings to various editor commands when the user focus on the editor and presses alt+0. It could also be placed as the first link in the top toolbar.
It's useful inline help. It'd be great to have it added to Sakai 11.
Source and details here http://ckeditor.com/addon/a11yhelp