Use this method to hide and restore palettes, windows, and ribbons. 
- At the Command prompt, enter HIDEPALETTES. 
 
- To turn on palettes that you've hidden, at the Command prompt, enter SHOWPALETTES. 
 If a palette has been turned back on manually and moved, it is not affected by SHOWPALETTES. 
 Note: You can also press Ctrl+0 or click the Clean Screen button at the lower-right corner of the drawing area to show and hide palettes.