 In film credits for stories, screenplays, etc., "&" indicates a closer collaboration than "and".The ampersand is used by the Writers Guild of America to denote two writers collaborating on a specific script, rather than one writer rewriting another's work.In screenplays, two authors joined with "&" collaborated on the script, while two authors joined with "and" worked on the script at different times and may not have consulted each other at all.