can OmniOutliner recognize URLs?

[John Oram]

Hi-

Is there any way to get OmniOutliner to launch a URL in a list, as 
OmniGraffle can in an object?  If not, a URL or 'action' column type 
would be nice to have in the future.

Also, is there any way to toggle variable row heights off and on? 
(If I have an extremely long URL, the row can get pretty tall.)

Thanks,
   John