{
  package Foo;
  my $foo = 1;
  package Bar;
  # can still see $foo here
  package Baz;
  # can still see $foo here
}
# cannot see $foo any more

##</code><code>##

{
  package Foo;
  our $foo = 1; # $foo is an alias for $Foo::foo
  package Bar;
  # $foo is still an alias for $Foo::foo here
  package Baz;
  # $foo is still an alias for $Foo::foo here
}
# cannot see $foo any more