close window : Alt + F4
Maximize window : Alt + F5
Maximize vertically : Alt + F6
Maximize horizontally : Alt + F7
Hide window : Alt + F8
Shade window : Alt + F9
Stick window : Alt + F10
Cycle windows focus : Alt + Tab
Move window : Control + Shift + Alt + Arrow (up, down, left, or right)
Resize window : Shift + Alt + Arrow (up, down, left, or right)
Next workspace : Control + Alt + Arrow right arrow
Previous workspace : Control + Alt + Arrow left
Add a workspace : Alt + Inser
Delete a workspace : Alt + Delete
Go to workspace number N (1-9) : Control + F(N)
Move the window to previous|next workspace : Alt + Control + Home|End
Move a window to workspace number N (1-9) : Alt + Control + keypad key number N
Start xfhelp4 : Alt + F1
Start xfrun4 : Alt + F2
Lock the screen : Alt + Control + Delete