• Open brings up a dialog box to open an existing file.
• To open a file: 1. Choose Open from the File menu.
2. In the file dialog box that appears, select the file you want to open.
3. Click Open or double-click the name of the file.
• By default, Mathematica CalcCenter shows only the files that it knows how to open.
• Keyboard shortcut: o (Windows); o (Macintosh).