Redo 
Edit > Redo (Ctrl+Shift+Z)
 

Description:

      Redo (Edit > Redo) is implemented in Silo much like in any other program - when you perform an action such as dragging a face or rotating an edge or performing a boolean operation between two shapes, you can reverse the effects of that action by calling Undo and then re-perform the command by calling Redo from the menu or by using the hotkey (Ctrl+Shift+Z).


Notes:

-You may Redo as many commands as you have undone with the Undo command.  However, if you use Undo several times and then perform another action such as moving points or changing a shape's geometry somehow, the stack of commands you undid will be lost and you will not be able to Redo them.

-Also see the entry for Undo (Edit > Undo).