use Exporter::VA;

%EXPORT= (
   foo => [ v1.0, 'foo_old', v2.0, 'foo_new' ],
   bar => 'bar_internal',
   baz => 'baz',
   fobble => \&figure_it_out, # parameter list is (caller, version, symbol, param-list tail)
   $x => '$x',
   :tagname => [ 'foo', 'bar' ],
   :DEFAULT => [ v1.0, ':_old_imports', v2.3, ':_new_imports' ],
   :_old_imports => [ 'foo', 'bar', 'baz', 'fobble' ],
   :_new_imports => [ 'fobble' ]
   );

Exporter::VA::plain qw/ baz $x /;