REVERSE thing
Outputs the reverse of its input.
If thing
is a list, then REVERSE outputs a list with the same members in the reverse order.
If thing
is a word, then REVERSE outputs a word with the same letters in the reverse order.
REVERSE throws an error if thing
is an array.
SHOW REVERSE [1 2 3]
[3 2 1]
SHOW REVERSE "abc
cba