CIGAL Reference Manual, Chapter 3 (lcase):

Lcase -- Convert a character string to lower case text

usage: str2 = lcase(str1)

LCASE copies an input character string (STR1) to an output string (STR2) converting uppercase characters (A-Z) to lower case (a-z). Non-alphabetic characters are copied without modification.

See Also:
UCASE(3)

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