]> The role of a data format as played by descriptions of such formats. A role played by a particular that represents identification information required to retrieve information that is realized according to a RealizationDescription. For instance, such an identifier role could be played by a URL, other types of URIs of a database key. Description of an access protocol to digitally realized information The role of a data access protocol as played by descriptions of such protocols. Played by an entity that realizes the information by means of an information system. Intuitively such an entity should be a physical endurant, however, DOLCE defines a physical endurant by having at least spatial quality. Information systems realize information by electrical charges which have no spatial quality. The player of this role has a digital realization as setting and is intended to act as a replacement for the physical endurant that needs to be in the setting of a situation that is an information realization. description of the format of a serialization