Rules on Civil Procedure
Section 7. Pleadings and documents that may be required; sanctions. - For purposes of determining whether the petition should be dismissed or denied pursuant to section 5 of this Rule, or where the petition is given due course under section 8 hereof, the Supreme Court may require or allow the filing of such pleadings, briefs, memoranda or documents as it may deem necessary within such periods and under such conditions as it may consider appropriate, and impose the corresponding sanctions in case of non-filing or unauthorized filing of such pleadings and documents or non-compliance with the conditions therefor. (n)