First, I would like to specify that the act does not set out any document exemptions, but rather exceptions that apply to information. That's why reviewing the documents takes us so long, as Ms. Emmerson pointed out. Our review is always done line-by-line. We can't decide whether a document as whole constitutes an exception. We can decide that some parts of a document are covered by the exceptions. You mentioned certain examples, specific technological procedures, for instance, which are the property of some companies or industries.
As far as criteria go, the act provides for exceptions, and the Treasury Board has issued directives that help us acquire a more thorough understanding of those exceptions. Our department uses those directives when making decisions. We have already said that we will provide you with the criteria. There are several of them, depending on the exception in question.