hint that ... is better for complex cases

doc/Type/Range.pod6

@@ -41,7 +41,7 @@ than the end point, the range is considered empty.
 
 Use the L<...|/language/operators#infix_...> sequence operator to produce lists of elements that
 go from larger to smaller values, or to use offsets other than
-increment-by-1.
+increment-by-1 and other complex cases.
 
 Use C<Inf> or C<*> (Whatever) to indicate an end point to be open-ended.