*/
startAt.isGoodArgsCnt(4);
Bytes b = (Bytes)startAt.getSubNode(1, Node.TYPE_BYTES).getExternal();
int adr = (int) startAt.getSubNode(2, Node.TYPE_NUMBER).getNumber();
int len = (int) startAt.getSubNode(3, Node.TYPE_NUMBER).getNumber();
return Node.createBytes(b.peek_bytes(adr,len));
}
}