The sun-domain_1_1.dtd file defines the structure of the domain.xml file, including the elements it can contain and the subelements and attributes these elements can have. The sun-domain_1_1.dtd file is located in the install-dir/lib/dtds directory.
Do not edit the sun-domain_1_1.dtd file; its contents change only with new versions of the Application Server.
The sun-domain_1_1.dtd interface is unstable. An unstable interface might be experimental or transitional, and hence might change incompatibly, be removed, or be replaced by a more stable interface in the next release.
Elements or attributes that appear in the sun-domain_1_1.dtd file but are not described in this chapter are not implemented and should not be used.
For general information about DTD files and XML, see the XML specification.