http://www.w3.org/1999/xhtml
element object

Model

<object
  archive = UriList
  class = xs:NMTOKENS
  classid = URI
  codebase = URI
  codetype = ContentType
  data = URI
  declare = <TODO local simpleType in attribute>
  dir = <TODO local simpleType in attribute>
  height = Length
  id = xs:ID
  lang = LanguageCode
  lang = xs:language
  name = xs:NMTOKEN
  onclick = Script
  ondblclick = Script
  onkeydown = Script
  onkeypress = Script
  onkeyup = Script
  onmousedown = Script
  onmousemove = Script
  onmouseout = Script
  onmouseover = Script
  onmouseup = Script
  standby = Text
  style = StyleSheet
  tabindex = tabindexNumber
  title = Text
  type = ContentType
  usemap = URI
  width = Length>
(param | (p | (h1 | h2 | h3 | h4 | h5 | h6) | div | (ul | ol | dl) | (pre | hr | blockquote | address) | fieldset | table) | form | (a | ((br | span | bdo | map) | object | img) | (tt | i | b | big | small) | (em | strong | dfn | code | q | samp | kbd | var | cite | abbr | acronym | sub | sup) | (input | select | textarea | label | button) ) | (noscript | (ins | del | script) ) )*
</object>

archive

class

classid

codebase

codetype

data

declare

dir

height

id

lang

lang

In due course, we should install the relevant ISO 2- and 3-letter codes as the enumerated possible values . . .

name

onclick

ondblclick

onkeydown

onkeypress

onkeyup

onmousedown

onmousemove

onmouseout

onmouseover

onmouseup

standby

style

tabindex

title

type

usemap

width

Source

<xs:element name="object">
  <xs:complexType mixed="true">
    <xs:choice maxOccurs="unbounded" minOccurs="0">
      <xs:element ref="param"/>
      <xs:group ref="block"/>
      <xs:element ref="form"/>
      <xs:group ref="inline"/>
      <xs:group ref="misc"/>
    </xs:choice>
    <xs:attributeGroup ref="attrs"/>
    <xs:attribute name="declare">
      <xs:simpleType>
        <xs:restriction base="xs:token">
          <xs:enumeration value="declare"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
    <xs:attribute name="classid" type="URI"/>
    <xs:attribute name="codebase" type="URI"/>
    <xs:attribute name="data" type="URI"/>
    <xs:attribute name="type" type="ContentType"/>
    <xs:attribute name="codetype" type="ContentType"/>
    <xs:attribute name="archive" type="UriList"/>
    <xs:attribute name="standby" type="Text"/>
    <xs:attribute name="height" type="Length"/>
    <xs:attribute name="width" type="Length"/>
    <xs:attribute name="usemap" type="URI"/>
    <xs:attribute name="name" type="xs:NMTOKEN"/>
    <xs:attribute name="tabindex" type="tabindexNumber"/>
  </xs:complexType>
</xs:element>