“my” docs mentioning dynamic variables

Explains the relationship between lexical/package and normal/dynamic scope a bit more.

Asked in  #1082

doc/Language/variables.pod6

@@ -228,7 +228,7 @@ boolean context before using it for anything else:
 
     =begin code
     sub foo() {
-        $*FOO // 'foo';
+        $*FOO // 'foo';u can send a pull request.
     }
 
     say foo; # OUTPUT: «foo␤»
@@ -238,6 +238,7 @@ boolean context before using it for anything else:
     say foo; # OUTPUT: «bar␤»
     =end code
 
+Dynamic variables can have lexical scope when declared with C<my> or package scope when declared with C<our>. Dynamic resolution and resolution through symbol tables introduced with C<our> are two orthogonal issues.
 
 =head2 The C<!> Twigil
 X<|$!>
@@ -491,7 +492,7 @@ new-location; # OUTPUT: «outside␤»
 =end code
 
 To make C<new-location()> print C<nowhere>, make C<$location> a dynamic
-variable using L<the * twigil|#The_*_Twigil>.
+variable using L<the * twigil|#The_*_Twigil>. This twigil makes the compiler look up the symbol in the calling scope instead of the outer scope which is the case otherwise.
 
 C<my> is the default scope for subroutines, so C<my sub x() {}> and
 C<sub x() {}> do exactly the same thing.