1 Pa. Code § 13.35
(a) The government of the Commonwealth of Pennsylvania at the Statewide level shall be referred to as the Commonwealth except when used in connection with a reference to the government of the United States of America, when the term State is used. The following are examples:
(b) The territory under the jurisdiction of the government of the Commonwealth of Pennsylvania shall be referred to as ‘‘this Commonwealth’’ except that a reference to ‘‘this State’’ or ‘‘Pennsylvania’’ shall be used when required to avoid ambiguity. The following are examples:
The provisions of this § 13.35 added by JCD Order No. 6, dated May 21, 1970, 1 Pa.B. 10.