A value is data used by a script. A value might be a number, the name of an object, or the setting of a property. AppleScript only recognizes certain types of data such as text, integers, lists, and dates.

Each value has a class, which determines its properties, elements, operations, and the literal expressions or constants that can be used with it. Here are some of the types of values you can use:

•	Boolean: either true or false
•	Class: a class name
•	Constant: a word defined by AppleScript or a program
•	Data: data returned by a program that doesn't belong to any other type of value
•	Date: a complete date includes the day of the week, the month, day of month, year, and time
•	Integer: a positive or negative number: 1, 2, 3
•	List: a list of values
	{"it's", 2, true}
	Each item in the list can belong to any class.
•	Number: a synonym for Integer and Real
•	Real: a positive or negative number that can include a decimal fraction
•	Record: an unordered collection of properties
	{name: "Steve", height: 74.5, weight: 175}
•	Reference: a reference to an object
•	String, International Text, Styled Text, Text: types of text values

AppleScript constants

AppleScript defines a large number of constants that you can use to make your scripts easier to understand. Here are some of the common ones you'll want to use:

	Type		Values
	Boolean		true, false
	Date		minutes, hours, days, weeks
			the days of the week
			the months of the year
	Save options		yes, no, ask
	String		return, space, tab
	Text style		all caps, all lowercase, bold, condensed, expanded, hidden, italic, outline, plain, shadow, small caps, strikethrough, subscript, superscript, underline