Reference elements

reference
The <reference> element defines a top-level container for a reference topic. Reference topics document programming constructs or facts about a product. Examples of reference topics include language elements, class descriptions, commands, functions, statements, protocols, types, declarators, operands, and API information, which provide quick access to facts, but no explanation of concepts or procedures. Reference topics have the same high-level structure as any other topic type, with a title, short description, and body. Within the body, reference topics are typically organized into one or more sections, property lists, and tables. The reference topic type provides general rules that apply to all kinds of reference information, using elements like <refsyn> for syntax or signatures, and <properties> for lists of properties and values.
refbody
The <refbody> element is a container for the main content of the reference topic. Reference topics limit the body structure to tables (both simple and standard), property lists, syntax sections, and generic sections and examples, in any sequence or number.
refsyn
The <refsyn> element is a special section inside a reference topic. The section often contains syntax or signature content (for example, a command-line utility's calling syntax, or an API's signature). The <refsyn> contains a brief, possibly diagrammatic description of the subject's interface or high-level structure.
properties
The <properties> element gives a list of properties for the subject of the current topic, for example whether a class is public or protected. Each property can include the type, value, and a description. The typical rendering is usually in a table-like format. To represent multiple values for a type, just create additional property elements and use only the <propvalue> element (and <propdesc> when needed) for each successive value.
prophead
The prophead element supports regular headings for the properties element.
proptypehd
The proptypehd element supports regular headings for the type column of a properties table.
propvaluehd
The propvaluehd element supports regular headings for the value column of a properties table.
propdeschd
The propdeschd element supports regular headings for the description column of a properties table.
property
The <property> element represents a property of the current topic's subject. For example, if the current topic is a class, the property might show that the class is protected rather than public. It contains three optional elements: type, value, and description.
proptype
The proptype element describes the type of property.
propvalue
The <propvalue> element indicates the value or values for the current property type. You can put values in separate rows if they need separate descriptions, and just leave the <proptype> element blank.
propdesc
The <propdesc> element is used to provide a short description of the property type and its listed values (or just the value).