There are no specific rules governing the nature of questions which may be put to witnesses appearing before committees, beyond the general requirement of relevance to the issue before the committee.... Particular attention has been paid to the questioning of public servants. The obligation of a witness to answer all questions put by the committee must be balanced against the role that public servants play in providing confidential advice to their ministers.
So I'm saying, sir, that it's fine for you to read that section, but this section makes it quite clear that there are no specific rules governing the nature of questions, as you have suggested.