EFUN: lower_case

SYNTAX:
string lower_case( str );
  string str;

DESCRIPTION:
This converts the all characters in 'str' to lower case.

RETURN VALUE:
The modified string is returned.

SEE ALSO:
upper_case
capitalize

EXAMPLE:
string str;

str = lower_case( "New York, also known as The Big Apple" );
// str is now "new york, also known as the big apple"
