lower

Definition: object x2 = lower(object x1)
Description: Convert an atom or sequence to lower case.

Should you need to, you can also invoke islower(integer ch) to determine if a character is lower case. [ASCII only]
Example:
s = lower("Phix")
-- s is "phix"
a = lower('B')
-- a is 'b'
s = lower({"Phix", "Programming"})
-- s is {"phix", "programming"}
See Also: upper