[O] Help with beamer

[Neuwirth Erich]

I am preparing a presentation with or-mode and beamer.
I am using 
:PROPERTIES:
:BEAMER_envargs: [<+->]
:END:
to make list elements appear one by one.

When creating handouts, I want to supress the build effect (it works by creatin 
many slides
unnecessary in printout)

Is there a way of using a global variable to enable or disable all these blocks 
controlling
the build effects so I can avoid changing them all one by one?