Activity diagram: link/loop across 2 partitions

Question

Hello guys,

 

Any chance you would now, Using the beta formatting, how to:

Create a loop/repeat accross partition ?

Create a link or if accross partition ?

create a direct link between 2 activities ?

e.g.

http://cdn-ak.f.st-hatena.com/images/fotolife/p/pepe_la_phew/20120911/20120911211537.png

http://plantuml.com/imgp/activity_009.png

 

It feasible using the previous formatting but I can't find a way using the beta formatting since it's purely sequencial.

Many thanks in advance.

 

Cheers,

MMV