(topic learningmeta-d) The <lcLom> provides a set of specialized data elements to use to specify metadata in the learning topics and learning map domain. The <lomStructure> provides learning metadata about the underlying organizational structure of the resource. The <lomCoverage> provides learning metadata about the temporal or spatial characteristics of the content, such as historical context. The <lomAggregationLevel> describes the functional size of the learning resource. The <lomTechRequirement> provides learning metadata about the operating system(s) under which the learning resource can run. The <lomInstallationRemarks> provides learning metadata about how to install and needed resources. The <lomOtherPlatformRequirements> provides learning metadata information about other software and hardware requirements. The <lomInteractivityType> provides learning metadata about the the type of interactivity supported by the resource. The <lomLearningResourceType> provides learning metadata about the specific kind of resource used, most dominant kind first. The <lomInteractivityLevel> provides learning metadata about the level of interactivity between an end user and the learning object. The <lomSemanticDensity> provides learning metadata about a subjective measure of the learning object's usefulness as compared to its size or duration. The <lomIntendedUserRole> provides learning metadata about the normal user of the resource, most dominant first. The <lomContext> provides learning metadata about the typical learning environment where use of learning object is intended to take place. The <lomTypicalAgeRange> provides learning metadata about the age of the typical intended user. The <lomDifficulty> provides learning metadata about how hard it is to work through the resource for the typical target audience. The <lomTypicalLearningTime> provides learning metadata about the approximate or typical time it takes to work with the resource.