Just to clarify why the word “only” is in there, in previous committees I chaired it sometimes happened that—which members generally don't like—some witnesses would distribute documents without authorization, not realizing that they needed to be in both official languages and thereby bypassing the intent of this routine motion. Alternatively, you might get third parties, members of the public, coming into the room who have not been called as witnesses but who are distributing documents to committee members without the committee's authorization. That is why the word “only” is in there.
On June 16th, 2011. See this statement in context.