Ctrl+2, tag text (star) as important

Ctrl+3, tag as question

Ctrl+4, remember for later, highlight

Ctrl+0, clear tags

Ctrl + Alt + 1, make header 1

Ctrl + Alt + 0, resets the font to the default

Ctrl + Alt + H, toggle highlighting of selected text

Alt + Shift + T, insert current time

Alt + Shift + F, insert date and time

Ctrl + k, add a hyperlink

Ctrl + G, to show hidden navigation, Esc, to hide it again

Ctrl+Alt+= and Ctrl+Alt+-, incrementally show and hide the different navigation panes