The AuthorsToString method is a private function in the Search component that accepts an ADODB recordset (the authors child recordset) and returns a string. This method is called by the AdvancedSearch method of the Search component. Code runs that loops through the recordset and assembles the fields (first and last names) in the records into one long ";"-delimited string. The string is returned to the AdvancedSearch method.
The complete code for the AuthorsToString method is available in Search.cls in the code section.