(a) By whom. All documents filed with the Commission shall be signed personally:

(1) By the person or persons on whose behalf they are tendered for filing;

(2) By a general partner, officer or director of a partnership, corporation, association, or other legal entity; or

(3) By an attorney-at-law having authority with respect thereto.

The Proceedings Clerk may require appropriate evidence of the authority of a person subscribing a document on behalf of another person.

(b) Effect. The signature on any document of any person acting either for himself or as attorney or agent for another constitutes certification by him that:

(1) He has read the document subscribed and knows the contents thereof;

(2) If executed in any representative capacity, it was done with full power and authority to do so;

(3) To the best of his knowledge, information, and belief, every statement contained in the document is true and not misleading; and

(4) The document is not being interposed for delay.