Calling the command:
Icon  | 
Ribbon  | 
|---|---|
  | 
  | 
Keyboard  | 
Textual Menu  | 
-  | 
File > Save Copy  | 
The command is also available in the quick access toolbar.
It allows to save a copy of the current document under a different name without opening such copy, so you can continue working with the source document. When you call the command, a standard file saving window of the current operating system will appear.