From what you told me, It is a matter of convenience for CIC.

My concern is the way it is talked on this forum as if it has some implications on the way application is being asked to submit.
I understand it is my application but this is not my first application with CIC. I have always stapled my forms if it has multiple pages and it was never an issue.
Again, my questioning was just for the clarification that it is OK to staple, if applicant feels like it and there is no strict rule from CIC in this regard.
Thanks.