technical means and media by which a resource is obtained from the distributor tiles, layers, geographic areas, etc., in which data is available NOTE: unitsOfDistribution applies to both onLine and offLine distributions estimated size of a unit in the specified transfer format, expressed in megabytes. The transfer size is > 0.0 information about online sources from which the resource can be obtained information about offline media on which the resource can be obtained rate of occurrence of distribution format of distribution information about the distributor of and options for obtaining the resource information about the distributor party from whom the resource may be obtained. This list need not be exhaustive description of the computer language construct that specifies the representation of data objects in a record, file, message, storage device or transmission channel citation/URL of the specification for the format amendment number of the format version recommendations of algorithms or processes that can be applied to read or expand resources to which compression techniques have been applied medium used by the format information about the media on which the resource can be distributed name of the medium on which the resource can be received density at which the data is recorded units of measure for the recording density number of items in the media identified method used to write to the medium description of other limitations or requirements for using the medium method used to write to the medium common ways in which the resource may be obtained or received, and related instructions and fee information fees and terms for retrieving the resource. Include monetary units (as specified in ISO 4217) date and time when the resource will be available general instructions, terms and services provided by the distributor typical turnaround time for the filling of an order description of the order options record request/purchase choices