 For example, the fifth Depeche Mode single to follow this pattern, "People are People", is identified with the code "BONG5", printed on the single's cover, spine and on the record or CD itself.The "BONG" designation is preceded with numbers or letters that indicate the format of the release, such as "7" for a 7" single, "CD" for a CD-single, or "i" for an iTunes-only release.Additional letters such as "L" or "XL" denote a limited edition release.