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3.2.6.3 GPRconfig external values

A number of the XML nodes described above can contain one or more children, and specify how to query a value from an executable. Here is the list of valid contents for these nodes. The <directory> and <external> children can be repeated multiple times, and the <filter> and <must_match> nodes will be applied to each of these. The final value of the external value is the concatenation of the computation for each of the <directory> and <external> nodes.