Free Hero Mesh

    p=o->prev;
    if(!c || o->class==c) {
      v=send_message(from,n,msg,arg1,arg2,arg3);
      if(s>0) {
        switch(v.t) {
          case TY_NUMBER: t+=v.u; break;
          case TY_CLASS: t++; break;
          case TY_MESSAGE: break;
          default:
            if(v.t<=TY_MAXTYPE) Throw("Invalid return type for BroadcastSum");
            t++;
        }
      } else {
        if(s<0) arg2=v;
        t++;