An item to be processed is received and scanned. The scan identifies any functions or procedures in the item being processed, and extracts actual code representing those functions or procedures. Any invoking functions, which invoke the identified function, are, themselves, identified. Actual code for the invoking function is extracted as well. An output documentation file is generated that includes a name of the identified function or procedure, as well as actual code for the function or procedure, and actual code from at least one example of an invoking function.