More keyboard functions!

Keyboard navigation and operations are needed for tag sidebar too. Some key (ctrl, shift or alt) could change application of such actions as "Up", "Down", "Home", "End", "Insert", "Delete" from notes to tags. Ctrl+Z undoing insertion of notes would be nice too. 
Full command list with ability to set own keyboard/mouse shortcuts to each command, I guess, is the best way to make interface perfect for everyone...