This appendix is informative.
| Attribute Name | Module | Description | 
|---|---|---|
| abbr | XHTML Tables Module | Abbreviated form | 
| about | XHTML Metainformation Attributes Module | Define which resource that has a specified property | 
| archive | XHTML Object Module | Define list of object archives | 
| axis | XHTML Tables Module | Define a category for a cell | 
| charset | XML Scripting Module | Indicate the expected encoding of the remote resource | 
| cite | XHTML Hypertext Attributes Module | Set the URI for a citation | 
| class | XHTML Core Attributes Module | Set the class of an element | 
| colspan | XHTML Tables Module | Set the number of columns a table cell should span | 
| content-length | XHTML Object Module | Indicate the size of a link's target | 
| content | XHTML Metainformation Attributes Module | Set the content for metadata | 
| coords | XHTML Image Map Attributes Module | Define coordinates for am element | 
| datatype | XHTML Metainformation Attributes Module | Indicate the datatype of external metadata | 
| datetime | XHTML Edit Attributes Module | Define date and time | 
| declare | XHTML Object Module | Indicate that an object should only be loaded | 
| defaultAction | XML Events Module | Indicate the default action for the event | 
| defer | XML Scripting Module | Indicate processing of contents should be defered | 
| dir | XHTML Bi-directional Text Attribute Module | Define the direction of text | 
| disabled | XHTML Style Sheet Module | Indicate that an item is disabled | 
| edit | XHTML Edit Attributes Module | Indicate how an item was edited | 
| encoding | XHTML Embedding Attributes Module | Define the encoding of an external source | 
| eventTarget | XML Events Module | Set the id on which the event is monitored | 
| event | XML Events Module | Set the event type | 
| full | XHTML Text Module | Refer to the full version of an abbreviation | 
| handler | XML Events Module | Specify the handler method for an event | 
| headers | XHTML Tables Module | Define the header cells that relate to this cell | 
| href | XHTML Hypertext Attributes Module | Define a URI target when the element is activated | 
| hreflang | XHTML Hypertext Attributes Module | Indicate the base language of the target | 
| hrefmedia | XHTML Hypertext Attributes Module | Indicate the target media of an href attribute | 
| hreftype | XHTML Hypertext Attributes Module | Indicate the content type of an href attribute | 
| id | XHTML Core Attributes Module | Define the ID for the element | 
| implements | XML Scripting Module | Indication of what a script implements | 
| ismap | XHTML Image Map Attributes Module | Indicate whether this is an imagemap | 
| layout | XHTML Core Attributes Module | Indicate whether whitespace is relevant | 
| media | XHTML Media Attribute Module | Define the applicable media | 
| media | XHTML Style Sheet Module | Define the applicable media | 
| name | XHTML Object Module | Set the name of an applet parameter | 
| nextfocus | XHTML Hypertext Attributes Module | Define the order in which this control is accessed | 
| observer | XML Events Module | Set the observer for an event | 
| phase | XML Events Module | Specify the phase in which the event is tracked | 
| prevfocus | XHTML Hypertext Attributes Module | Define the order in which this control is accessed | 
| profile | XHTML Document Module | Define the location of the metadata profiles | 
| propagate | XML Events Module | Indicate whether the event should continue to propagate | 
| property | XHTML Metainformation Attributes Module | Indicate the property being defined | 
| rel | XHTML Metainformation Attributes Module | Define the relationship to the target | 
| resource | XHTML Metainformation Attributes Module | Define the resource a property is related to | 
| rev | XHTML Metainformation Attributes Module | Define the relationship from the target to subject | 
| role | XHTML Role Attribute Module | Define the role of this element | 
| rowspan | XHTML Tables Module | Define the number of rows a cell spans | 
| scope | XHTML Tables Module | Define the scope of a header | 
| shape | XHTML Image Map Attributes Module | Define the shape of a map | 
| span | XHTML Tables Module | Define the number of columns a colgroup spans | 
| src | XHTML Embedding Attributes Module | Define the URI for an external source for the element | 
| srctype | XHTML Embedding Attributes Module | Indicate the content type of a src attribute | 
| style | XHTML Style Attribute Module | Set the style to use on the element | 
| target | XHTML Hypertext Attributes Module | Set the target window for a link | 
| title | XHTML Core Attributes Module | Set the title for an element | 
| type | XHTML Object Module | Define the type of a referenced value element | 
| typeof | XHTML Metainformation Attributes Module | Define the RDF type of metadata | 
| usemap | XHTML Image Map Attributes Module | Set the name of an image map to use | 
| value | XHTML Object Module | Set the value for an applet parameter | 
| value | XHTML List Module | Set the value for a list item | 
| valuetype | XHTML Object Module | Set the type of an applet value | 
| version | XHTML Document Module | Set the XHTML document version | 
| xml:base | XHTML Hypertext Attributes Module | Set the base URI for the element | 
| xml:id | XHTML Core Attributes Module | Define the ID for the element | 
| xml:lang | XHTML I18N Attribute Module | Set the language of the element | 
| xsi:schemaLocation | XHTML Document Module | Set the location for an XML Schema |