A CSS selector, e.g. of a [SpeakableSpecification](https://schema.org/SpeakableSpecification) or [WebPageElement](https://schema.org/WebPageElement). In the latter case, multiple matches within a page can constitute a single conceptual "Web page element".

Additional menu item(s) such as a side dish of salad or side order of fries that can be added to this menu item. Additionally it can be a menu section containing allowed add-on menu items for this menu item.

A subgrouping of the menu (by dishes, course, serving time period, etc.).

A food or drink item contained in a menu or menu section.

A person assigned to instruct or provide instructional assistance for the [CourseInstance](https://schema.org/CourseInstance).

The medium or means of delivery of the course instance or the mode of study, either as a text label (e.g. "online", "onsite" or "blended"; "synchronous" or "asynchronous"; "full-time" or "part-time") or as a URL reference to a term from a controlled vocabulary (e.g. https://ceds.ed.gov/element/001311#Asynchronous).

An offering of the course at a specific time and place or through specific media or mode of study or to a specific section of students.

A description of the qualification, award, certificate, diploma or other educational credential awarded as a consequence of successful completion of this course or program.

Requirements for taking the Course. May be completion of another [Course](https://schema.org/Course) or a textual description like "permission of instructor". Requirements may be a pre-requisite competency, referenced using [AlignmentObject](https://schema.org/AlignmentObject).

The identifier for the [Course](https://schema.org/Course) used by the course [provider](https://schema.org/provider) (e.g. CS101 or 6.001).

A short summary of the specific claims reviewed in a ClaimReview.

A broadcast channel of a broadcast service.

The frequency in MHz for a particular broadcast.

The number of attendee places for an event that remain unallocated.

Either the actual menu as a structured representation, as text, or a URL of the menu.

The total number of individuals that may attend an event or venue.

Represents a relationship between two geometries (or the places they represent), relating a geometry to one that contains it, i.e. it is inside (i.e. within) its interior. As defined in [DE-9IM](https://en.wikipedia.org/wiki/DE-9IM).

Represents spatial relations in which two geometries (or the places they represent) touch: they have at least one boundary point in common, but no interior points." (a symmetric relationship, as defined in [DE-9IM](https://en.wikipedia.org/wiki/DE-9IM) )

Represents a relationship between two geometries (or the places they represent), relating a geometry to another that geospatially overlaps it, i.e. they have some but not all points in common. As defined in [DE-9IM](https://en.wikipedia.org/wiki/DE-9IM).

Represents spatial relations in which two geometries (or the places they represent) have at least one point in common. As defined in [DE-9IM](https://en.wikipedia.org/wiki/DE-9IM).

Represents spatial relations in which two geometries (or the places they represent) are topologically equal, as defined in [DE-9IM](https://en.wikipedia.org/wiki/DE-9IM). "Two geometries are topologically equal if their interiors intersect and no part of the interior or boundary of one geometry intersects the exterior of the other" (a symmetric relationship)

Represents spatial relations in which two geometries (or the places they represent) are topologically disjoint: they have no point in common. They form a set of disconnected geometries." (a symmetric relationship, as defined in [DE-9IM](https://en.wikipedia.org/wiki/DE-9IM))

Represents a relationship between two geometries (or the places they represent), relating a geometry to another that crosses it: "a crosses b: they have some but not all interior points in common, and the dimension of the intersection is less than that of at least one of them". As defined in [DE-9IM](https://en.wikipedia.org/wiki/DE-9IM).

Represents a relationship between two geometries (or the places they represent), relating a covering geometry to a covered geometry. "Every point of b is a point of (the interior or boundary of) a". As defined in [DE-9IM](https://en.wikipedia.org/wiki/DE-9IM).