SHIFT-ENTER - new paragraph()
ENTER - insert linebreak()
CTRL-A - Select all
CTRL-B - Bold
CTRL-I - Italic
CTRL-U - Underline
CTRL-S - Strikethrough
CTRL-L - Justify Left
CTRL-E - Justify Center
CTRL-R - Justify Right
CTRL-J - Justify Full
CTRL-Z - Undoes your last action
CTRL-Y Redoes your last action
CTRL-N Set format to paragraph
CTRL-0 (zero) - Clean content pasted from Word
CTRL-1 .. CTRL-6 - Headings (h1 .. h6)
CTRL-X - Cut selection
CTRL-C - Copy selection
CTRL-V - Paste from clipboard