LOWER(SEXP) (STRING)

 Function
  Converts uppercase characters in a string to lowercase.

 Syntax
  LOWER(sexp)

   sexp = Any string expression.

 Return Type & Value
  STRING
  Returns sexp with all uppercase characters converted to lowercase.

 Remarks
  Although "STRING" is technically different from "string" (ie, the
  computer doesn't recognize them as being the same because one is
  uppercase and the other is lowercase), it is often necessary to save,
  display or compare information in a case insensitive format.  This
  function will return a string with all uppercase characters converted
  to lowercase.  So, using the above example, LOWER("STRING") would return
  "string".

 Examples
  STRING s
  WHILE (UPPER(s) <> "QUIT") DO
    INPUT "Text",s
    PRINTLN LOWER(s)
  ENDWHILE