Click the File | Close All command to close all plot, worksheet, and grid documents in Surfer without exiting the application. You are prompted to save or discard any changes in each document before the window closes.
Click the application control close button or File | Exit to close all documents and exit Surfer.
Specify if you would like changes saved in the Surfer dialog.
Click Yes to save changes and then close the window. If the file has not been previously saved the Save As dialog appears.
Click No to close the document without saving changes.
Click Cancel to return to the active document window.