decorative banner

Expression elements guide key


    Use the following key when referencing the expression elements guide:

    Illustration of the Key for using the expression elements guide
    Key for using the expression elements guide
    • A. Headings represent expression objects. All elements listed below a heading are attributes (that you can retrieve from the object) or methods (that you can call on the object). Many of the attributes and methods return other objects--look up those object types in this guide to determine how to continue your expression.
    • B. Initial cap Roman text at the beginning of a description represents the return value type. Some return values include a number in square brackets--this number specifies the dimension of the returned property or array. If a specific dimension is not included, the dimension of the returned array depends on the dimension of the input.
    • C. Bold text represents the expression language element to type in your expression.
    • D. Bold text inside parentheses represents the type of argument(s) that you need to add. If an argument contains an equal sign (=) and a value (such as t=time or width=.2), the argument uses the included default value if you don't specify a different value.
    • E. Text inside curly brackets represents the argument description. Some argument descriptions include a number in square brackets--this number indicates the dimension of the expected property or array. If a specific dimension is not included, any dimension will work.
    • F. Text following the curly brackets is a description and possibly an example of the element.