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PPENDIX
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Expressions Reference
The following tables list expressions and expression elements that you can use to
identify specific types of data. The first table applies to advanced expressions, in
alphabetic order. The remaining tables cover the different types of classic
expressions.
In This Appendix
Advanced Expressions
Classic Expressions

Advanced Expressions

The following table is a listing of advanced expression prefixes, with
cross-references to descriptions of these prefixes and the operators that you can
specify for them. Note that some prefixes can work with multiple types of
operators. For example, a cookie can be parsed by using operators for text or
operators for HTTP headers.
You can use any element in the following tables as a complete expression on its
own, or you can use various operators to combine these expression elements with
others to form more complex expressions.
Note: The Description column in the following table contains cross-references
to additional information about prefix usage and applicable operators for the
prefix.
Expression Prefix Notes and Links to Prefix and Applicable Operator
Descriptions
CLIENT.ETHER “Prefixes for MAC Addresses,” on page 154
“Operations for MAC Addresses,” on page 154