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Syntax	(ls a [b … bn]) → True if a < b < bn
Arguments	a: The first expression you want to compare.
	[b … bn]: The next expressions you want to compare.
Returns	boolean: The expressions are compared left to right. If there is any case where the left value is “greater” than or equal to the right value, `ls' will return Nil. Else it returns True.
Category	logical operator
Description	kA comparison function that returns True if the left hand side is less than the right hand side. The same as < in math. Integers are compared by value, so (ls 1 2) → True, but (ls 1 1) → Nil Strings are compared by alphabetical position, so (ls “a” “b”) → True, but (ls “a” “A”) → Nil Lists are compared by length, so (ls '(2) '(1 1)) → True, but (ls '(1) '(2)) → Nil

NOTE: The function < has not been documented, but is believed to act exactly as ls does.

(ls 7 3)

Returns Nil.

(< 7 3)

Also returns Nil.

(ls "Betel" "Betelgeuse")

Returns True.

(ls '(a a b) '(c d e))

Returns True.

(ls "B" "b")

Returns Nil.

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