All definitions set forth in Pa. R. C. P. No. 76 are incorporated by reference into these rules. In addition:
"Deposition for use at Trial" means any non-party deposition which a party is permitted to offer at trial in lieu oflive testimony pursuant to statute, general rule, or rule of evidence.
"Brief' means a short written memorandum setting forth the pertinent facts and legal authorities in support ofthe position being taken on issues before the court for adjudication.
Ind. Cnty. Pa. 76