1 Pa. Code § 9.36
Whenever internal divisions are necessary, sections shall be subdivided into subsections, subsections into paragraphs, paragraphs into subparagraphs, subparagraphs into clauses and clauses into subclauses, designated as follows:
| Terminology | Illustrative Symbol |
| Subsection | (a) |
| Paragraph | (1) |
| Subparagraph | (i) |
| Clause | (A) |
| Subclause | (I) |