What documents are properly to be considered on an application to strike out a statement of claim on the grounds that it discloses no reasonable cause of action?

In the light of these authorities I am of the opinion that the only documents which are properly to be considered on an application to strike out a statement of claim on the ground that it discloses no reasonable cause of action are the notice of motion, the attacked statement of claim, the particulars furnished pursuant to a demand therefor, and any document which is referred to in the statement of claim upon which the plaintiff must rely for the establishment of his claim; for such a document is to be considered for the purposes of the application as forming part of the pleading: Hogan v. Brantford (City) (1909-10) 1 OWN 226. Other documents referred to in a statement of claim which are merely evidential and from which the plaintiff’s claim does not arise should not, in my opinion, be considered; for to do so would be to admit evidence to support the attacked pleading, which is not permissible.