The dataflow of one function parameter: its name becomes a definition in the function's frame, and its default value, if it has one, is processed in the same frame so it may read the parameters before it.
the parameter to process
what the surrounding function definition is being processed with
The dataflow of one function parameter: its name becomes a definition in the function's frame, and its default value, if it has one, is processed in the same frame so it may read the parameters before it.