The architectural attributes group includes a set of attributes defined for document
level elements such as <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.
@DITAArchVersion- Designates
the version of the architecture that is in use. The default value will increase with
each release of DITA. This attribute is in the namespace
"http://dita.oasis-open.org/architecture/2005/". This attribute is defined with the
XML data type CDATA, but uses a default value of the current version of DITA. The
current default is "1.3".
@xmlns:ditaarch- Declares
the default DITA
namespace.
Although this is technically a namespace rather than an attribute, it is included here
because it is specified as an attribute in the DTD grammar files distributed by OASIS.
The value is fixed to "http://dita.oasis-open.org/architecture/2005/".
@domains- Indicates
the specialized domains that are included in the DTD or Schema. This attribute is
defined with the XML data type CDATA, and each new document type SHOULD specify a default. The value
will differ depending on what domains are included in the current DTD or Schema; a
sample value is "(topic ui-d) (topic hi-d) (topic pr-d) (topic sw-d) (topic ut-d) (topic
indexing-d)".