What is the 'Petro System' for a Petro Stopping Center characterized by?

Petro Centers are established and operated pursuant to Petro Franchise's system (the "Petro System"). The Petro System is characterized by our, or our Affiliates', collection of procedures, policies, standards, specifications, controls and other distinguishing elements, including distinctive signage, interior and exterior design, décor and color schemes, including as set forth in our plans (the "Development Plans"); recipes and menu items, uniform standards, specifications and procedures for operation; quality and uniformity of products and services; training and assistance; and advertising, promotional, marketing and public relations programs; all of which we may change, improve and further develop in our discretion (see Items 8, 11, 14 and 16). The Petro System and certain standards, specifications, operating, procedures and rules that we prescribe from time to time (the "Petro System Standards") are set forth in our Confidential Operations Manual, as well as in other materials (including, as applicable, audio, video, digital, and written materials) that we furnish to franchisees from time to time for use in operating a Petro Center (collectively, the "Manuals"). The Petro System is also characterized by certain core programs (the "Core Programs"), which are set forth in the Manuals and otherwise communicated to franchisees in writing. You are required to participate in all Core Programs. The Core Programs are further described in Item 16.

Source: Item 1 — THE FRANCHISOR AND ANY PARENTS, PREDECESSORS AND AFFILIATES (FDD pages 9–14)