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Match References, Variables and Fixed Strings

The <group> and <data> elements can reference match groups from parent expressions or from stored matches in variables. In the case of the <group> element, referenced values are passed on to child expressions whereas the <data> element can use match group references for name and value attributes. In the case of both elements the way of specifying references is the same.

Match References, Variables and Fixed Strings

Expression match references

Variable reference

Use of fixed strings

Concatenation of references