Start-up Code
The new start-up code region provides a convenient place to put any initialization code for your document. Procedure definitions, variable initialization, and changes to default settings can all be put together in one place, and will be executed automatically. The resulting document is easy to distribute, easy to use, and is free of distracting “housekeeping” details.

• Code is run automatically when the document is opened and on restart
• Code is saved as part of the document file, but is not part of the visible document
• Because the code is not placed directly inside the document itself, users cannot inadvertently re-execute the initialization code
• Includes a syntax checker