The annotated expression evaluates to an integer whose value is less than or equal to the lengths of all the given sequences. ("LTEq" stands for "Less than or equal to".)

For example, an expression with type @LTLengthOf({"a", "b"}) is less than or equal to both a.length and b.length. The sequences a and b might have different lengths.

@LTEqLengthOf({"a"}) = @LTLengthOf(value={"a"}, offset=-1), and
@LTEqLengthOf(value={"a"}, offset=x) = @LTLengthOf(value={"a"}, offset=x-1) for any x.