[Rwp] Delete content of a region

[ROBIN Alexis]

Dear all,

    After reflexion, I didn't find a simple way to remove a time 
selection, except in deleting item. Problem, items doesn't correspond to 
the piece I want to remove.
So, I thought that regions could help me. First I create a region with 
the time selection I need, then I delete the content of this region. But 
I can't find how to do this last action.

Do you know how to delete the content of a region?

Thank you,

Alexis ROBIN