Several parts of a language reference are common between
many locations, such as the descriptions for the selection and property attributes
of DITA elements. These are described as sets to reduce unnecessary duplication
of common information.
%display-atts;
Display attributes is a parameter entity declaration in the topic DTD that includes attributes whose values may be used for affecting the display of a topic or its selection by search tools.
%global-atts;
Debugging attributes, normally hidden from authoring view.
%id-atts;
ID attributes (%id-atts;) is a parameter entity declaration in
the topic DTD that includes attributes that enable the naming and referencing
of elements in a DITA topic: id and conref.
%rel-atts;
Relational attributes (<%rel-atts;>) is a
parameter entity declaration in the topic DTD that includes attributes whose
values may be used for representing navigational relationships. These attributes
occur only on elements that represent relationships between topics.
%select-atts;
Attributes that support both filtering and flagging include platform, product, audience, and otherprops. Attribute rev only
lets you flag information that matches a run-time parameter. Attribute importance currently
provides output effects only for steps (where only the values "optional" and
"required" are supported).
%univ-atts;
Universal attributes is a parameter entity declaration in the topic DTD, which defines a set of common attributes available on many DITA elements..
%topicref-atts;
The %topicref-atts; parameter entity represents a group of attributes
used in numerous map elements: map, topicref, relcolspec, relcell, topichead,
and topicgroup. The set is similar to those documented in topicref-atts-no-toc but
includes the toc attribute.
%topicref-atts-no-toc;
The %topicref-atts-no-toc; parameter entity represents the set
of attributes used in the reltable map
element. The set is similar to those documented in topicref-atts but
for <reltable> the toc attribute
defaults to "no". For the other elements that use the %topicref-atts;
group declaration, the toc attribute doesn't have
a default; they can inherit their toc value from
the nearest container, otherwise it functions upon output as if set to "yes".
Other common DITA attributes
The following attributes are not part of an entity group but are common to many elements.