Help:Property

Properties are a part of the Semantic-Mediawiki extention. Essentially properties function as variables on a page. These variables are treated like attributes in a database or columns in a set of related tables, and can be searched and displayed using the #ask: parser function.

Properties are defined in the Property namespace and can have types, descriptions, limited possible values, etc. To see the properties that are defined and in use see Special:Properties.

A property is added to a page using the syntax property name::property value ; however, properties will usually be added to a page via a template, such as Template:Infobox item or Template:Npc recipe.

For more detailed information see Help:Property on semantic-mediawiki.org.