.\"return the lowercase version of a given string .DT lower_case Discworld driver help lower_case Name .SI 5 lower_case() - return the lowercase version of a given string .EI Synopsis .SI 5 string lower_case(string str); .EI Description .SP 5 5 Return the lowercase version of a given string (original string remains unchanged). .EP See also .SI 5 capitalize(3) .EI