the command about breakable prop

my friends:

2 questions:

1)is there a command can absorb the breakable prop together and destroy?pls tell me )

2)"setpos x y" can move player to specified origin... i wonder if it work now?

thks for ur help)

1) Lolwat.
2) Not rly, teleports you back to your old position.

I think that he is asking if there is a command that will break all objects in a map. Presumably to drop items so that they can be picked up. I don't know of any, though.