expand with more paractical examples

Author: tbrowder

doc/Language/packages.pod6

@@ -124,18 +124,20 @@ immediately or is continued with another C<::> outside the parentheses.
 Most symbolic references are done with this notation:
 
 =for code :skip-test
-$foo = "Bar";
-$foobar = "Foo::Bar";
-$::($foo)           # lexically-scoped $Bar
-$::("MY::$foo")     # lexically-scoped $Bar
-$::("OUR::$foo")    # package-scoped $Bar
-$::("GLOBAL::$foo") # global $Bar
-$::("PROCESS::$foo")# process $Bar
-$::("PARENT::$foo") # current package's parent's $Bar
-$::($foobar)        # $Foo::Bar
-$::($foobar)::baz   # $Foo::Bar::baz
-$::($foo)::Bar::baz # $Bar::Bar::baz
-$::($foobar)baz     # ILLEGAL at compile time (no operator baz)
+my $foo = "Foo";
+my $bar = "Bar";
+my $foobar = "Foo::Bar";
+$::($bar)              # lexically-scoped $Bar
+$::("MY::$bar")        # lexically-scoped $Bar
+$::("OUR::$bar")       # package-scoped $Bar
+$::("GLOBAL::$bar")    # global $Bar
+$::("PROCESS::$bar")   # process $Bar
+$::("PARENT::$bar")    # current package's parent's $Bar
+$::($foobar)           # $Foo::Bar
+@::($foobar)::baz      # @Foo::Bar::baz
+@::($foo)::Bar::baz    # @Bar::Bar::baz
+@::($foobar)baz        # ILLEGAL at compile time (no operator baz)
+@::($foo)::($bar)::baz # @Foo::Bar::baz
 
 An initial C<::> doesn't imply global. Here as part of the interpolation
 syntax it doesn't even imply package. After the interpolation of the