Point out difference between finite and infinite Range subscripts

Author: taboege

doc/Language/list.pod6

@@ -504,7 +504,9 @@ list's C<.elems> as an argument and uses the resulting range to slice:
     say @a[0..^*/2];  # OUTPUT: «(1 2 3)␤»
 
 Notice that C<0..^*> and C<0..^*+0> behave consistently in subscripts despite
-one being an infinite range and the other a WhateverCode producing ranges.
+one being an infinite range and the other a WhateverCode producing ranges,
+but C<0..*+0> will give you an additional trailing C<Nil> because, unlike the
+infinite range C<0..*>, it does not truncate.
 
 =head2 Array constructor context