Clarify diff between [*] and [] slices

Also mention they decont (don't see deconting in search on docs site,
so linked to the Advent article)

Author: zoffixznet

doc/Language/subscripts.pod6

@@ -210,7 +210,7 @@ In particular the I<type> can be any of the following:
 
 =item a Range or a lazy Iterable, that L<truncates|#Truncating slices> in [ ]
 
-=item '*' (whatever-star), that returns the full slice (as if all keys/indices were specified)
+=item '*' (whatever-star), reifies that returns the full slice (as if all keys/indices were specified)
 
 =item any other object, that provides a single-element access rather than a slice
 
@@ -220,6 +220,9 @@ In particular the I<type> can be any of the following:
 
 =item any iterable different from the above ones, normal slice
 
+The notable difference between C<*> and Zen slice (empty) is that the L<Whatever> star
+will cause full L<reification|/language/glossary#index-entry-Reify>, while Zen slice won't.
+Both versions also L<decont|https://perl6advent.wordpress.com/2017/12/02/perl-6-sigils-variables-and-containers/#decont>.
 
 So even a one-element list returns a slice, whereas a bare scalar value doesn't: