In terms of the power to order the production of documents, as I indicated, this power is absolute.
When a document is ordered, there might be a legitimate privacy concern or other legitimate concerns not to provide the document in full. If there are redactions, it's really for the House or committees to decide whether or not they accept the reason that was put forward not to see the information. If the House or committees are still unhappy with the reason put forward, they can take further measures. It could be from ordering a representative to appear at the bar of the House or, as we saw in 2011, withdrawing the confidence in government.