definiens: means all of Sellers ’ written files, documents, i nstruments, papers, books, reports, records, tapes, microfilms, photographs, letters, b udgets, forecasts, plans, operating records, safety and environmental plans and reports, data, Permits and Permit applications, studies and documents, Tax Ret urns, ledgers, journals, title policies, customer lists, regulatory filings, operating data and plans, resea rch material, technical documentation ( design specifications, eng ineering information, test results, maintenance sch edules, functional requirements, operating instructions, lo gic manuals, processes, flow charts, etc . ), user do cumentation ( installation guides, user manuals, training materi als, release notes, working papers, etc . ), marketin g documentation ( sales brochures, flyers, pamphlets, web pages, etc . ), and other similar materials, in e ach case whether or not in electronic form relating to the B usiness