Short description of Red Light | Green Light 1.0.4: Red Light | Green Light determines the extent to which a computer has been used to access pornography-based Internet web sites. RLGL is not Internet web site blocking software nor is it a friend of anyone using a computer for illicit purposes. RLGL identifies illicit computer use. It is designed with parents, schools, libraries, employers, law enforcement -any individual concerned about improper computer use.