This section collects commonly used attributes, with common definitions. If an element uses a different definition, or narrows the scope of, an otherwise common attribute, it will be called out in the topic that defines the element.
@class attribute.<topic> and <map>. These attributes are intended to provide information about the DITA namespace, what level of DITA is in use, and what vocabulary modules are in use.@toc or @format; in those cases the element definition will clarify that the element does not use this full set. That is generally done in order to specify a default for one attribute, such as defaulting @format to "ditamap" on the <mapref> element.<simpletable> elements.<data> element, and are reused on most or all specializations of the <data> element.<simpletable> element and <simpletable> specializations. These attributes are not defined for the OASIS exchange table (<table>).<topicref> element, and are reused on most or all specializations of the <topicref> element.