Inside Macintosh: AppleScript Language Guide / Part 3 - Appendixes

Appendix A - The Language at a Glance

Predefined Variables

Table A-9 lists special variables that are defined by AppleScript. These variables are global, that is, they are available anywhere in a script.

As with all other identifiers, predefined variables are not case sensitive. For example, result, Result, and RESULT are all treated as the same variable.

Predefined variables

Identifier	Class	Description
it	Reference	The default target. For more information, see Chapter 7, "Control Statements."
me	Reference	The current script (used within Tell statements to refer to handlers or properties of the current script). For more information, see Chapter 7, "Control Statements," and Chapter 8, "Handlers."
pi	Real	The value π (roughly 3.14159).
result	Any class	The result returned by the most recently executed command or the most recently evaluated expression. If the most recently executed command did not return a result, then the value of result is undefined.
return	String	A return character.
space	String	A space character.
tab	String	A tab character.