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Inside Macintosh: AppleScript Language Guide / Part 2 - AppleScript Language Reference
Chapter 6 - Expressions / Variables


Predefined Variables

Predefined variables are variables whose values are supplied by AppleScript. You can use them in scripts without setting their values. Predefined variables are global--that is, you can use them anywhere in a script.

For a summary of the predefined variables in the AppleScript English language dialect, refer to Appendix A, "The Language at a Glance."

Note
Although AppleScript does not prevent you from setting the values of predefined variables, you should treat predefined variables as constants--that is, you should never change their values.

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© Apple Computer, Inc.
13 JUL 1996