Briefs shall contain:
1° A copy of the application for price fixing made, as the case may be, pursuant to Article L. 145-11 or pursuant to article R. 145-20;
2° Indication of other claims;
3° Explanations of law and fact capable of justifying the claims of their author or refuting those of the other party.
Submissions in reply or those drawn up after the taking of evidence may include only explanations of law or fact.