"A revenue procedure is an official statement of a procedure that affects the rights or duties of taxpayers or other members of the public under the Internal Revenue Code, related statutes, tax treaties and regulations and that should be a matter of public knowledge. It is also published in the Internal Revenue Bulletin." (IRS Website)
"While a revenue ruling generally states an IRS position, a revenue procedure provides return filing or other instructions concerning an IRS position." (IRS Website)
The following citation resources may be informative.
Below are links to select sources offering revenue procedures.
Below is a pertinent abbreviation.