In Mac's Text Edit and other apps, menus no longer feature the 'Save As' option on the File menu. Annoying.
However, you can bring it back for one use or permanently, according to CNet.
With a document open, hold down the option key and click the File Menu. SAVE AS appears.
A permanent solution: System Preferences > Keyboard > Shortcuts tab > App Shortcuts from the left panel. Click "+" button to create a new shortcut. In the popup box, Select "All Applications." Type in Save As in Menu Title. Add some sort of keyboard shortcut like command-shift-4. Then select Add. The next time you use an Apple App, the Save As option will appear under File.
