add .args and .arg to Parcel

Author: TimToady

S07-lists.pod

@@ -13,8 +13,8 @@ Synopsis 7: Lists and Iteration
 
     Created: 12 July 2012
 
-    Last Modified: 12 July 2012
-    Version: 1
+    Last Modified: 29 May 2013
+    Version: 2
 
 =head1 Overview
 
@@ -68,7 +68,8 @@ that creates C<Parcel> objects.
 
 A C<Parcel> is also C<Positional>, and uses flattening context for
 list operations such as C<.[]> and C<.elems>.  See "Flattening contexts"
-below.
+below.  For raw access to the arguments without flattening, you may use
+C<.arg($n)> instead of C<.[$n]>, and C<.args> instead of C<.elems>.
 
 =head2 Flattening contexts, the C<Iterable> type