| Index of Attributes Legend: Deprecated, Loose DTD, Frameset
DTD 
| Name | Related Elements | Type | Default | Depr. | DTD | Comment |  
| abbr | TD, TH | %Text; | #IMPLIED |  |  | abbreviation for header cell |  
| accept-charset | FORM | %Charsets; | #IMPLIED |  |  | list of supported charsets |  
| accept | FORM, INPUT | %ContentTypes; | #IMPLIED |  |  | list of MIME types for file upload |  
| accesskey | A, AREA, BUTTON, INPUT, LABEL, LEGEND, TEXTAREA | %Character; | #IMPLIED |  |  | accessibility key character |  
| action | FORM | %URI; | #REQUIRED |  |  | server-side form handler |  
| align | CAPTION | %CAlign; | #IMPLIED | D | L | relative to table |  
| align | APPLET, IFRAME, IMG, INPUT, OBJECT | %IAlign; | #IMPLIED | D | L | vertical or horizontal alignment |  
| align | LEGEND | %LAlign; | #IMPLIED | D | L | relative to fieldset |  
| align | TABLE | %TAlign; | #IMPLIED | D | L | table position relative to window |  
| align | HR | (left | center | right) | #IMPLIED | D | L |  |  
| align | DIV, H1, H2, H3, H4, H5, H6, P | (left | center | right | justify) | #IMPLIED | D | L | align, text alignment |  
| align | COL, COLGROUP, TBODY, TD, TFOOT, TH, THEAD, TR | (left | center | right | justify | char) | #IMPLIED |  |  |  |  
| alink | BODY | %Color; | #IMPLIED | D | L | color of selected links |  
| alt | APPLET | %Text; | #IMPLIED | D | L | short description |  
| alt | AREA, IMG | %Text; | #REQUIRED |  |  | short description |  
| alt | INPUT | CDATA | #IMPLIED |  |  | short description |  
| archive | APPLET | CDATA | #IMPLIED | D | L | comma-separated archive list |  
| archive | OBJECT | CDATA | #IMPLIED |  |  | space-separated list of URIs |  
| axis | TD, TH | CDATA | #IMPLIED |  |  | comma-separated list of related headers |  
| background | BODY | %URI; | #IMPLIED | D | L | texture tile for document background |  
| bgcolor | TABLE | %Color; | #IMPLIED | D | L | background color for cells |  
| bgcolor | TR | %Color; | #IMPLIED | D | L | background color for row |  
| bgcolor | TD, TH | %Color; | #IMPLIED | D | L | cell background color |  
| bgcolor | BODY | %Color; | #IMPLIED | D | L | document background color |  
| border | TABLE | %Pixels; | #IMPLIED |  |  | controls frame width around table |  
| border | IMG, OBJECT | %Pixels; | #IMPLIED | D | L | link border width |  
| cellpadding | TABLE | %Length; | #IMPLIED |  |  | spacing within cells |  
| cellspacing | TABLE | %Length; | #IMPLIED |  |  | spacing between cells |  
| char | COL, COLGROUP, TBODY, TD, TFOOT, TH, THEAD, TR | %Character; | #IMPLIED |  |  | alignment char, e.g. char=':' |  
| charoff | COL, COLGROUP, TBODY, TD, TFOOT, TH, THEAD, TR | %Length; | #IMPLIED |  |  | offset for alignment char |  
| charset | A, LINK, SCRIPT | %Charset; | #IMPLIED |  |  | char encoding of linked resource |  
| checked | INPUT | (checked) | #IMPLIED |  |  | for radio buttons and check boxes |  
| cite | BLOCKQUOTE, Q | %URI; | #IMPLIED |  |  | URI for source document or msg |  
| cite | DEL, INS | %URI; | #IMPLIED |  |  | info on reason for change |  
| class | All elements but BASE, BASEFONT, HEAD, 
HTML, META, PARAM, SCRIPT, STYLE, TITLE | CDATA | #IMPLIED |  |  | space-separated list of classes |  
| classid | OBJECT | %URI; | #IMPLIED |  |  | identifies an implementation |  
| clear | BR | (left | all | right | none) | none | D | L | control of text flow |  
| code | APPLET | CDATA | #IMPLIED | D | L | applet class file |  
| codebase | OBJECT | %URI; | #IMPLIED |  |  | base URI for classid, data, archive |  
| codebase | APPLET | %URI; | #IMPLIED | D | L | optional base URI for applet |  
| codetype | OBJECT | %ContentType; | #IMPLIED |  |  | content type for code |  
| color | BASEFONT, FONT | %Color; | #IMPLIED | D | L | text color |  
| cols | FRAMESET | %MultiLengths; | #IMPLIED |  | F | list of lengths, default: 100% (1 col) |  
| cols | TEXTAREA | NUMBER | #REQUIRED |  |  |  |  
| colspan | TD, TH | NUMBER | 1 |  |  | number of cols spanned by cell |  
| compact | DIR, DL, MENU, OL, UL | (compact) | #IMPLIED | D | L | reduced interitem spacing |  
| content | META | CDATA | #REQUIRED |  |  | associated information |  
| coords | AREA | %Coords; | #IMPLIED |  |  | comma-separated list of lengths |  
| coords | A | %Coords; | #IMPLIED |  |  | for use with client-side image maps |  
| data | OBJECT | %URI; | #IMPLIED |  |  | reference to object's data |  
| datetime | DEL, INS | %Datetime; | #IMPLIED |  |  | date and time of change |  
| declare | OBJECT | (declare) | #IMPLIED |  |  | declare but don't instantiate flag |  
| defer | SCRIPT | (defer) | #IMPLIED |  |  | UA may defer execution of script |  
| dir | All elements but APPLET, BASE, BASEFONT, BDO, BR, FRAME, FRAMESET, IFRAME, PARAM, SCRIPT | (ltr | rtl) | #IMPLIED |  |  | direction for weak/neutral text |  
| dir | BDO | (ltr | rtl) | #REQUIRED |  |  | directionality |  
| disabled | BUTTON, INPUT, OPTGROUP, OPTION, SELECT, TEXTAREA | (disabled) | #IMPLIED |  |  | unavailable in this context |  
| enctype | FORM | %ContentType; | "application/x-www- form-urlencoded" |  |  |  |  
| face | BASEFONT, FONT | CDATA | #IMPLIED | D | L | comma-separated list of font names |  
| for | LABEL | IDREF | #IMPLIED |  |  | matches field ID value |  
| frame | TABLE | %TFrame; | #IMPLIED |  |  | which parts of frame to render |  
| frameborder | FRAME, IFRAME | (1 | 0) | 1 |  | F | request frame borders? |  
| headers | TD, TH | IDREFS | #IMPLIED |  |  | list of id's for header cells |  
| height | IFRAME | %Length; | #IMPLIED |  | L | frame height |  
| height | TD, TH | %Length; | #IMPLIED | D | L | height for cell |  
| height | IMG, OBJECT | %Length; | #IMPLIED |  |  | override height |  
| height | APPLET | %Length; | #REQUIRED | D | L | initial height |  
| href | A, AREA, LINK | %URI; | #IMPLIED |  |  | URI for linked resource |  
| href | BASE | %URI; | #IMPLIED |  |  | URI that acts as base URI |  
| hreflang | A, LINK | %LanguageCode; | #IMPLIED |  |  | language code |  
| hspace | APPLET, IMG, OBJECT | %Pixels; | #IMPLIED | D | L | horizontal gutter |  
| http-equiv | META | NAME | #IMPLIED |  |  | HTTP response header name |  
| id | All elements but BASE, HEAD, 
HTML, META, SCRIPT, STYLE, TITLE | ID | #IMPLIED |  |  | document-wide unique id |  
| ismap | IMG, INPUT | (ismap) | #IMPLIED |  |  | use server-side image map |  
| label | OPTION | %Text; | #IMPLIED |  |  | for use in hierarchical menus |  
| label | OPTGROUP | %Text; | #REQUIRED |  |  | for use in hierarchical menus |  
| lang | All elements but APPLET, BASE, BASEFONT, BR, FRAME, FRAMESET, IFRAME, PARAM, SCRIPT | %LanguageCode; | #IMPLIED |  |  | language code |  
| language | SCRIPT | CDATA | #IMPLIED | D | L | predefined script language name |  
| link | BODY | %Color; | #IMPLIED | D | L | color of links |  
| longdesc | IMG | %URI; | #IMPLIED |  |  | link to long description (complements
alt) |  
| longdesc | FRAME, IFRAME | %URI; | #IMPLIED |  | F | link to long description (complements
title) |  
| marginheight | FRAME, IFRAME | %Pixels; | #IMPLIED |  | F | margin height in pixels |  
| marginwidth | FRAME, IFRAME | %Pixels; | #IMPLIED |  | F | margin widths in pixels |  
| maxlength | INPUT | NUMBER | #IMPLIED |  |  | max chars for text fields |  
| media | STYLE | %MediaDesc; | #IMPLIED |  |  | designed for use with these media |  
| media | LINK | %MediaDesc; | #IMPLIED |  |  | for rendering on these media |  
| method | FORM | (GET | POST) | GET |  |  | HTTP method used to submit the form |  
| multiple | SELECT | (multiple) | #IMPLIED |  |  | default is single selection |  
| name | BUTTON, TEXTAREA | CDATA | #IMPLIED |  |  |  |  
| name | APPLET | CDATA | #IMPLIED | D | L | allows applets to find each other |  
| name | SELECT | CDATA | #IMPLIED |  |  | field name |  
| name | FORM | CDATA | #IMPLIED |  |  | name of form for scripting |  
| name | FRAME, IFRAME | CDATA | #IMPLIED |  | F | name of frame for targetting |  
| name | IMG | CDATA | #IMPLIED |  |  | name of image for scripting |  
| name | A | CDATA | #IMPLIED |  |  | named link end |  
| name | INPUT, OBJECT | CDATA | #IMPLIED |  |  | submit as part of form |  
| name | MAP | CDATA | #REQUIRED |  |  | for reference by usemap |  
| name | PARAM | CDATA | #REQUIRED |  |  | property name |  
| name | META | NAME | #IMPLIED |  |  | metainformation name |  
| nohref | AREA | (nohref) | #IMPLIED |  |  | this region has no action |  
| noresize | FRAME | (noresize) | #IMPLIED |  | F | allow users to resize frames? |  
| noshade | HR | (noshade) | #IMPLIED | D | L |  |  
| nowrap | TD, TH | (nowrap) | #IMPLIED | D | L | suppress word wrap |  
| object | APPLET | CDATA | #IMPLIED | D | L | serialized applet file |  
| onblur | A, AREA, BUTTON, INPUT, LABEL, SELECT, TEXTAREA | %Script; | #IMPLIED |  |  | the element lost the focus |  
| onchange | INPUT, SELECT, TEXTAREA | %Script; | #IMPLIED |  |  | the element value was changed |  
| onclick | All elements but APPLET, BASE, BASEFONT, BDO, BR, FONT, FRAME, FRAMESET, HEAD, HTML, IFRAME, ISINDEX, META, PARAM, SCRIPT, STYLE, TITLE | %Script; | #IMPLIED |  |  | a pointer button was clicked |  
| ondblclick | All elements but APPLET, BASE, BASEFONT, BDO, BR, FONT, FRAME, FRAMESET, HEAD, HTML, IFRAME, ISINDEX, META, PARAM, SCRIPT, STYLE, TITLE | %Script; | #IMPLIED |  |  | a pointer button was double clicked |  
| onfocus | A, AREA, BUTTON, INPUT, LABEL, SELECT, TEXTAREA | %Script; | #IMPLIED |  |  | the element got the focus |  
| onkeydown | All elements but APPLET, BASE, BASEFONT, BDO, BR, FONT, FRAME, FRAMESET, HEAD, HTML, IFRAME, ISINDEX, META, PARAM, SCRIPT, STYLE, TITLE | %Script; | #IMPLIED |  |  | a key was pressed down |  
| onkeypress | All elements but APPLET, BASE, BASEFONT, BDO, BR, FONT, FRAME, FRAMESET, HEAD, HTML, IFRAME, ISINDEX, META, PARAM, SCRIPT, STYLE, TITLE | %Script; | #IMPLIED |  |  | a key was pressed and released |  
| onkeyup | All elements but APPLET, BASE, BASEFONT, BDO, BR, FONT, FRAME, FRAMESET, HEAD, HTML, IFRAME, ISINDEX, META, PARAM, SCRIPT, STYLE, TITLE | %Script; | #IMPLIED |  |  | a key was released |  
| onload | FRAMESET | %Script; | #IMPLIED |  | F | all the frames have been loaded |  
| onload | BODY | %Script; | #IMPLIED |  |  | the document has been loaded |  
| onmousedown | All elements but APPLET, BASE, BASEFONT, BDO, BR, FONT, FRAME, FRAMESET, HEAD, HTML, IFRAME, ISINDEX, META, PARAM, SCRIPT, STYLE, TITLE | %Script; | #IMPLIED |  |  | a pointer button was pressed down |  
| onmousemove | All elements but APPLET, BASE, BASEFONT, BDO, BR, FONT, FRAME, FRAMESET, HEAD, HTML, IFRAME, ISINDEX, META, PARAM, SCRIPT, STYLE, TITLE | %Script; | #IMPLIED |  |  | a pointer was moved within |  
| onmouseout | All elements but APPLET, BASE, BASEFONT, BDO, BR, FONT, FRAME, FRAMESET, HEAD, HTML, IFRAME, ISINDEX, META, PARAM, SCRIPT, STYLE, TITLE | %Script; | #IMPLIED |  |  | a pointer was moved away |  
| onmouseover | All elements but APPLET, BASE, BASEFONT, BDO, BR, FONT, FRAME, FRAMESET, HEAD, HTML, IFRAME, ISINDEX, META, PARAM, SCRIPT, STYLE, TITLE | %Script; | #IMPLIED |  |  | a pointer was moved onto |  
| onmouseup | All elements but APPLET, BASE, BASEFONT, BDO, BR, FONT, FRAME, FRAMESET, HEAD, HTML, IFRAME, ISINDEX, META, PARAM, SCRIPT, STYLE, TITLE | %Script; | #IMPLIED |  |  | a pointer button was released |  
| onreset | FORM | %Script; | #IMPLIED |  |  | the form was reset |  
| onselect | INPUT, TEXTAREA | %Script; | #IMPLIED |  |  | some text was selected |  
| onsubmit | FORM | %Script; | #IMPLIED |  |  | the form was submitted |  
| onunload | FRAMESET | %Script; | #IMPLIED |  | F | all the frames have been removed |  
| onunload | BODY | %Script; | #IMPLIED |  |  | the document has been removed |  
| profile | HEAD | %URI; | #IMPLIED |  |  | named dictionary of meta info |  
| prompt | ISINDEX | %Text; | #IMPLIED | D | L | prompt message |  
| readonly | TEXTAREA | (readonly) | #IMPLIED |  |  |  |  
| readonly | INPUT | (readonly) | #IMPLIED |  |  | for text and passwd |  
| rel | A, LINK | %LinkTypes; | #IMPLIED |  |  | forward link types |  
| rev | A, LINK | %LinkTypes; | #IMPLIED |  |  | reverse link types |  
| rows | FRAMESET | %MultiLengths; | #IMPLIED |  | F | list of lengths, default: 100% (1 row) |  
| rows | TEXTAREA | NUMBER | #REQUIRED |  |  |  |  
| rowspan | TD, TH | NUMBER | 1 |  |  | number of rows spanned by cell |  
| rules | TABLE | %TRules; | #IMPLIED |  |  | rulings between rows and cols |  
| scheme | META | CDATA | #IMPLIED |  |  | select form of content |  
| scope | TD, TH | %Scope; | #IMPLIED |  |  | scope covered by header cells |  
| scrolling | FRAME, IFRAME | (yes | no | auto) | auto |  | F | scrollbar or none |  
| selected | OPTION | (selected) | #IMPLIED |  |  |  |  
| shape | AREA | %Shape; | rect |  |  | controls interpretation of coords |  
| shape | A | %Shape; | rect |  |  | for use with client-side image maps |  
| size | HR | %Pixels; | #IMPLIED | D | L |  |  
| size | FONT | CDATA | #IMPLIED | D | L | [+|-]nn e.g. size="+1", size="4" |  
| size | INPUT | CDATA | #IMPLIED |  |  | specific to each type of field |  
| size | BASEFONT | CDATA | #REQUIRED | D | L | base font size for FONT elements |  
| size | SELECT | NUMBER | #IMPLIED |  |  | rows visible |  
| span | COL | NUMBER | 1 |  |  | COL attributes affect N columns |  
| span | COLGROUP | NUMBER | 1 |  |  | default number of columns in group |  
| src | SCRIPT | %URI; | #IMPLIED |  |  | URI for an external script |  
| src | INPUT | %URI; | #IMPLIED |  |  | for fields with images |  
| src | FRAME, IFRAME | %URI; | #IMPLIED |  | F | source of frame content |  
| src | IMG | %URI; | #REQUIRED |  |  | URI of image to embed |  
| standby | OBJECT | %Text; | #IMPLIED |  |  | message to show while loading |  
| start | OL | NUMBER | #IMPLIED | D | L | starting sequence number |  
| style | All elements but BASE, BASEFONT, HEAD, 
HTML, META, PARAM, SCRIPT, STYLE, TITLE | %StyleSheet; | #IMPLIED |  |  | associated style info |  
| summary | TABLE | %Text; | #IMPLIED |  |  | purpose/structure for speech output |  
| tabindex | A, AREA, BUTTON, INPUT, OBJECT, SELECT, TEXTAREA | NUMBER | #IMPLIED |  |  | position in tabbing order |  
| target | A, AREA, BASE, FORM, LINK | %FrameTarget; | #IMPLIED |  | L | render in this frame |  
| text | BODY | %Color; | #IMPLIED | D | L | document text color |  
| title | All elements but BASE, BASEFONT, HEAD, 
HTML, META, PARAM, SCRIPT, TITLE | %Text; | #IMPLIED |  |  | advisory title |  
| type | A, LINK | %ContentType; | #IMPLIED |  |  | advisory content type |  
| type | OBJECT | %ContentType; | #IMPLIED |  |  | content type for data |  
| type | PARAM | %ContentType; | #IMPLIED |  |  | content type for value when
valuetype=ref |  
| type | SCRIPT | %ContentType; | #REQUIRED |  |  | content type of script language |  
| type | STYLE | %ContentType; | #REQUIRED |  |  | content type of style language |  
| type | INPUT | %InputType; | TEXT |  |  | what kind of widget is needed |  
| type | LI | %LIStyle; | #IMPLIED | D | L | list item style |  
| type | OL | %OLStyle; | #IMPLIED | D | L | numbering style |  
| type | UL | %ULStyle; | #IMPLIED | D | L | bullet style |  
| type | BUTTON | (button | submit | reset) | submit |  |  | for use as form button |  
| usemap | IMG, INPUT, OBJECT | %URI; | #IMPLIED |  |  | use client-side image map |  
| valign | COL, COLGROUP, TBODY, TD, TFOOT, TH, THEAD, TR | (top | middle | bottom | baseline) | #IMPLIED |  |  | vertical alignment in cells |  
| value | INPUT | CDATA | #IMPLIED |  |  | Specify for radio buttons and
checkboxes |  
| value | OPTION | CDATA | #IMPLIED |  |  | defaults to element content |  
| value | PARAM | CDATA | #IMPLIED |  |  | property value |  
| value | BUTTON | CDATA | #IMPLIED |  |  | sent to server when submitted |  
| value | LI | NUMBER | #IMPLIED | D | L | reset sequence number |  
| valuetype | PARAM | (DATA | REF | OBJECT) | DATA |  |  | How to interpret value |  
| version | HTML | CDATA | %HTML.Version; | D | L | Constant |  
| vlink | BODY | %Color; | #IMPLIED | D | L | color of visited links |  
| vspace | APPLET, IMG, OBJECT | %Pixels; | #IMPLIED | D | L | vertical gutter |  
| width | HR | %Length; | #IMPLIED | D | L |  |  
| width | IFRAME | %Length; | #IMPLIED |  | L | frame width |  
| width | IMG, OBJECT | %Length; | #IMPLIED |  |  | override width |  
| width | TABLE | %Length; | #IMPLIED |  |  | table width |  
| width | TD, TH | %Length; | #IMPLIED | D | L | width for cell |  
| width | APPLET | %Length; | #REQUIRED | D | L | initial width |  
| width | COL | %MultiLength; | #IMPLIED |  |  | column width specification |  
| width | COLGROUP | %MultiLength; | #IMPLIED |  |  | default width for enclosed COLs |  
| width | PRE | NUMBER | #IMPLIED | D | L |  |  |