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Name(s): c_knock1: if (this:ok(player))
2: who = $su:match_player(args[1])
3: who.location:announce(this:_title(), " (", tostr(this), ") knocks on the walls, wondering if it could join. To invite it type: invite " + tostr(this))
4: this.knocked = who.location
5: this:_notify("You knocked on the walls of " + who.location:title())
6: `who.location:knocked(this) ! ANY'
7: endif