A set of requirements that a must be fulfilled in order to perform an Action.

An intangible item that describes an alignment between a learning resource and a node in an educational framework.

Intended audience for an item, i.e. the group for whom the item was created.

An entity holding detailed information about the available bed types, e.g. the quantity of twin beds for a hotel room. For the single case of just one bed of a certain type, you can use bed directly with a text. See also [BedType](http://schema.org/BedType) (under development).

A brand is a name used by an organization or business person for labeling a product, product group, or similar.

A unique instance of a BroadcastService on a CableOrSatelliteService lineup.

The frequency in MHz and the modulation used for a particular BroadcastService.

A trip on a commercial bus line.

A Category Code.

A class, also often called a 'Type'; equivalent to rdfs:Class.

This type covers computer programming languages such as Scheme and Lisp, as well as other language-like computer representations. Natural languages are best represented with the [Language](http://schema.org/Language) type.

A single item within a larger data feed.

A word, name, acronym, phrase, etc. with a formal definition. Often used in the context of category or subject classification, glossaries or dictionaries, product or creative work types, etc. Use the name property for the term being defined, use termCode if the term has an alpha-numeric code allocated, use description to provide the definition of the term.

A demand entity represents the public, not necessarily binding, not necessarily exclusive, announcement by an organization or person to seek a certain type of goods or services. For describing demand using this type, the very same properties used for Offer apply.

A permission for a particular person or group to access a particular file.

A program offered by an institution which determines the learning progress to achieve an outcome, usually a credential like a degree or certificate. This would define a discrete set of opportunities (e.g., job, courses) that together constitute a program with a clear start, end, set of requirements, and transition to a new occupational opportunity (e.g., a job), or sometimes a higher educational opportunity (e.g., an advanced degree).

An entry point, within some Web-based protocol.

Lists or enumerations—for example, a list of cuisines or music genres, etc.

An airline flight.

A FloorPlan is an explicit representation of a collection of similar accommodations, allowing the provision of common information (room counts, sizes, layout diagrams) and offers for rental or sale. In typical use, some [ApartmentComplex](http://schema.org/ApartmentComplex) has an [accommodationFloorPlan](http://schema.org/accommodationFloorPlan) which is a [FloorPlan](http://schema.org/FloorPlan). A FloorPlan is always in the context of a particular place, either a larger [ApartmentComplex](http://schema.org/ApartmentComplex) or a single [Apartment](http://schema.org/Apartment). The visual/spatial aspects of a floor plan (i.e. room layout, [see wikipedia](https://en.wikipedia.org/wiki/Floor_plan)) can be indicated using [image](http://schema.org/image).

Server that provides game interaction in a multiplayer game.

(Eventually to be defined as) a supertype of GeoShape designed to accommodate definitions from Geo-Spatial best practices.

A grant, typically financial or otherwise quantifiable, of resources. Typically a [funder](http://schema.org/funder) sponsors some [MonetaryAmount](http://schema.org/MonetaryAmount) to an [Organization](http://schema.org/Organization) or [Person](http://schema.org/Person), sometimes not necessarily via a dedicated or long-lived [Project](http://schema.org/Project), resulting in one or more outputs, or [fundedItem](http://schema.org/fundedItem)s. For financial sponsorship, indicate the [funder](http://schema.org/funder) of a [MonetaryGrant](http://schema.org/MonetaryGrant). For non-financial support, indicate [sponsor](http://schema.org/sponsor) of [Grant](http://schema.org/Grant)s of resources (e.g. office space). Grants support activities directed towards some agreed collective goals, often but not always organized as [Project](http://schema.org/Project)s. Long-lived projects are sometimes sponsored by a variety of grants over time, but it is also common for a project to be associated with a single grant. The amount of a [Grant](http://schema.org/Grant) is represented using [amount](http://schema.org/amount) as a [MonetaryAmount](http://schema.org/MonetaryAmount).

A US-style health insurance plan, including PPOs, EPOs, and HMOs.