Decimal point numbering may be used when it is necessary to add a Section or Sections between two existing Sections. Use a decimal point followed by an arabic numeral, beginning with the number 1 (e.g., 10:10-3-19, 10:10-3-19.1., 10:10-3-19.2, ...10:10-3-20).
Okla. Admin. Code § 655:10-3-28