Pennsylvania Code
Title 101 - GENERAL ASSEMBLY
Part I - LEGISLATIVE REFERENCE BUREAU
Subpart C - LEGISLATIVE DRAFTING MANUAL
Chapter 15 - STATUTES
Subchapter D - AMENDATORY STATUTES
BODY
Section 15.223 - Designation of new provisions

(a) Changing provisions. Major subdivisions, sections, subsections or other minor subdivisions should not be renumbered or relettered. Doing so often leads to endless confusion in later citations of the provisions. It becomes difficult to determine whether reference is intended to the section or subdivision originally carrying the number or letter or to the renumbered or relettered section or subdivision.

(b) Adding provisions. If it becomes necessary to add one or more chapters between two existing chapters, they are designated, by the numeral of the next preceding chapter followed by a capital letter A, B, C, etc. (1A). The same system generally applies to subchapters (A-1). If sections or subsections are added, except at the end of the statute or in other cases where there is room for expansion, the next preceding designation is used followed by a dot and the numeral 1, 2, 3, etc. (2.1). This is not a decimal system; .12 is further advanced than .3.