B.2 HTML Quick Reference

As with the other sections of this book, we use the Netscape and Internet Explorer icons to the far right of each item to indicate tags and attributes that are extensions to the HTML 4.01 and XHTML 1.0 standards. If no icon is shown, the tag or attribute is part of the HTML 4.01 and XHTML 1.0 standards.

We include the possible attributes (some required) indented below their respective tags. In the description, we give possible attribute values as either a range of integer numbers or a definitive list of options, where possible.

<a> ... </a>	Create a hyperlink anchor (href attribute) or fragment identifier (name attribute)
accesskey=char	Define the hot-key character for this anchor
charset=encoding	Specify the character set used to encode the target
coords=list	Specify a list of shape-dependent coordinates
href=url	Specify the URL of a hyperlink target
hreflang=language	Specify the language encoding for the target
name=name	Specify the name of a fragment identifier
rel=relationship	Indicate the relationship of this document to the target
rev=relationship	Indicate the reverse relationship of the target to this document
shape=shape	Define the region's shape to be circ, circle, poly, polygon, rect, or rectangle
tabindex=value	Define the position of this anchor in the document's tabbing order
target=name	Define the name of the frame or window to receive the referenced document
type=type	Specify the MIME type of the target
<abbr> ... </abbr>	The enclosed text is an abbreviation
<acronym> ... </acronym>	The enclosed text is an acronym
<address> ... </address>	The enclosed text is an address
<applet> ... </applet>	Define an executable applet within a text flow	*
align=position	Align the <applet> region to either the top, middle, bottom (default), left, right, absmiddle, baseline, or absbottom of the text in the line
alt=string	Specify alternative text to replace the <applet> region within browsers that support the <applet> tag but cannot execute the application
archive=url	Specify a class archive to be downloaded to the browser and then searched for code class
class=name	Specify a style class controlling the appearance of this tag
code=class	Specify the class name of the code to be executed (required)
codebase=url	Specify the URL from which the code is retrieved
height=n	Specify the height, in pixels, of the <applet> region
hspace=n	Specify additional space, in pixels, to allow to the left and right of the <applet> region
id=name	Define a name for this applet that is unique to this document
mayscript	Allow the applet to access JavaScript within the page
name=name	Specify the name of this particular instance of the applet
object=data	Specify a representation of the object's execution state
style=style	Specify an inline style for this tag
title=string	Provide a title for the applet
vspace=n	Specify additional space, in pixels, to allow above and below the <applet> region
width=n	Specify the width, in pixels, of the <applet> region
<area>	Define a mouse-sensitive area in a client-side image map
accesskey=char	Define the hot-key character for this area
alt=string	Provide alternative text to be displayed by nongraphical browsers
coords=list	Specify a comma-separated list of shape-dependent coordinates that defines the edge of this area
href=url	Specify the URL of a hyperlink target associated with this area
nohref	Indicate that no document is associated with this area; clicking in the area has no effect
notab	Do not include this area in the tabbing order
onblur=applet	Specify an applet to be run when the mouse leaves the area
onfocus=applet	Specify an applet to be run when the mouse enters the area
shape=shape	Define the region's shape to be circ, circle, poly, polygon, rect, or rectangle
tabindex=value	Define the position of this area in the document's tabbing order
taborder=n	Specify this area's position in the tabbing order
target=name	Specify the frame or window to receive the document linked by this area
<b> ... </b>	Format the enclosed text using a bold typeface
<base>	Specify the base URL for all relative URLs in this document	*
href=url	Specify the base URL (required)
target=name	Define the default target of all <a> links in the document
<basefont>	Specify the font size for subsequent text (deprecated; do not use)	*
color=color	Specify the base font's color
face=name	Specify the local font to be used for the base font
id=name	Define a name for this tag that is unique to this document
name=name	Specify the local font to be used for the base font
size=value	Set the base font size, from 1 to 7 (required; default is 3)
<bdo> ... </bdo>	Bidirectional override, changing the rendering direction of the enclosed text	*
class=name	Specify a style class controlling the appearance of this tag
dir=dir	Specify the rendering direction for text — either left to right (ltr) or right to left (rtl)
id=name	Define a name for this tag that is unique to this document
lang=language	Specify the language used for this tag's contents using a standard two-character ISO language name
style=style	Specify an inline style for this tag
title=string	Specify a title for this tag
<bgsound>	Define background audio for the document	*
loop=value	Set the number of times to play the audio; value may be an integer or the value infinite
src=url	Provide the URL of the audio file to be played
<big> ... </big>	Format the enclosed text using a bigger typeface
<blink> ... </blink>	Cause the enclosed content to blink
<blockquote> ... </blockquote>	The enclosed text is a block quotation
cite=url	Specify the URL of the source of the quoted material
<body> ... </body>	Delimit the beginning and end of the document body
alink=color	Set the color of active hypertext links in the document
background=url	Specify the URL of an image to be tiled in the document background
bgcolor=color	Set the background color of the document
bgproperties=value	With value set to fixed, prevent the background image from scrolling with the document content
leftmargin=value	Set the size, in pixels, of the document's left margin
link=color	Set the color of unvisited hypertext links in the document
onblur=applet	Specify an applet to be run when the mouse leaves the document window
onfocus=applet	Specify an applet to be run when the mouse enters the document window
onload=applet	Specify an applet to be run when the document is loaded
onunload=applet	Specify an applet to be run when the document is unloaded
text=color	Set the color of regular text in the document
topmargin=value	Set the size, in pixels, of the document's top margin
vlink=color	Set the color of visited links in the document
<br>	Break the current text flow, resuming at the beginning of the next line	*
class=name	Specify a style class controlling the appearance of this tag
clear=margin	Break the flow and move downward until the desired margin, either left, right, none, or all, is clear
id=name	Define a name for this tag that is unique to this document
style=style	Specify an inline style for this tag
title=string	Specify a title for this tag
<button>	Create a push-button element within a <form>
accesskey=char	Define the hot-key character for this button
disabled	Disable the button, preventing the user from clicking it
name=name	Specify the name of the parameter to be passed to the forms-processing application if the input element is selected (required)
onblur=applet	Specify an applet to be run when the mouse moves out of the button
onfocus=applet	Specify an applet to be run when the mouse moves into the button
tabindex=n	Specify this element's position in the tabbing order
type=type	Specify the button type — either button, submit, or reset
value=string	Specify the value of the parameter sent to the forms-processing application if this form element is selected (required)
<caption> ... </caption>	Define a caption for a table
align=position	For Netscape, set the vertical position of the caption to either top or bottom; for Internet Explorer, set the horizontal alignment of the caption to either left, center, or right
valign=position	Set the vertical position of the caption to either top or bottom
<center> ... </center>	Center the enclosed text
<cite> ... </cite>	The enclosed text is a citation
<code> ... </code>	The enclosed text is a code sample
<col>	Define a column within a <colgroup>
align=position	Set the column alignment to left, center, or right
char=character	Specify the alignment character for text in these cells
charoff=value	Set the offset within the cell at which the alignment character is placed
span=n	Define the number of columns affected by this <col> tag
valign=position	Set the vertical alignment of text within the column to either top, middle, or bottom
width=n	Set the width, in pixels or as a percentage, of the column
<colgroup>	Define a column group within a table
align=position	Set the horizontal alignment of text within the columns to either left, center, or right
char=character	Specify the alignment character for text in these cells
charoff=value	Set the offset within the cell at which the alignment character is placed
span=n	Define the number of columns in the group
valign=position	Set the vertical alignment of text within the columns to either top, middle, or bottom
width=n	Set the width, in pixels or as a percentage, of each column in the group
<comment> ... </comment>	Place a comment in the document (comments are visible in all other browsers)	*
<dd> ... </dd>	Define the definition portion of an element in a definition list
<del> ... </del>	Delineate a deleted section of a document
cite=url	Cite a document justifying the deletion
datetime=date	Specify the date and time of the deletion
<dfn> ... </dfn>	Format the enclosed text as a definition
<dir> ... </dir>	Create a directory list containing <li> tags
type=bullet	Set the bullet style for this list to either circle, disc (default), or square
<div> ... </div>	Create a division within a document
align=type	Align the text within the division to left, center, or right
nowrap	Suppress word wrapping within this division
<dl> ... </dl>	Create a definition list containing <dt> and <dd> tags
compact	Make the list more compact if possible
<dt> ... </dt>	Define the definition term portion of an element in a definition list
<em> ... </em>	Format the enclosed text with additional emphasis
<embed>	Embed an application in a document	*
align=position	Align the applet area to either the top or bottom of the adjacent text, or to the left or right margin of the page, with subsequent text flowing around the applet
border=n	Specify the size, in pixels, of the border around the applet
height=n	Specify the height, in pixels, of the applet
hidden	If present, hide the applet on the page
hspace=n	Define, in pixels, additional space to be placed to the left and right of the applet
name=name	Provide a name for the applet
palette=value	In Netscape, a value of foreground causes the applet to use the foreground palette (in Windows only), while background uses the background palette; in Internet Explorer, provide the foreground and background colors for the applet, specified as two color values separated by a vertical bar (|)
pluginspage=url	Provide the URL of the page containing instructions for installing the plug-in associated with the applet
src=url	Supply the URL of the data to be fed to the applet
type=type	Specify the MIME type of the plug-in to be used
units=type	Set the units for the height and width attributes to either pixels (the default) or en (half the text point size)
vspace=n	Define, in pixels, additional space to be placed above and below the applet
width=n	Specify the width, in pixels, of the applet
<fieldset> ... </fieldset>	Create a group of elements in a form
<font> ... </font>	Set the size or color of the enclosed text (deprecated; do not use)	*
class=name	Specify a style class controlling the appearance of this tag
color=color	Set the color of the enclosed text to the desired color
dir=dir	Specify the rendering direction for text — either left to right (ltr) or right to left (rtl)
face=list	Set the typeface of the enclosed text to the first available font in the comma-separated list of font names
id=name	Define a name for this tag that is unique to this document
lang=language	Specify the language used for this tag's contents using a standard two-character ISO language name
size=value	Set the size to an absolute size, from 1 to 7, or relative to the <basefont> size, using +n or -n (required)
style=style	Specify an inline style for this tag
title=string	Specify a title for this tag
<form> ... </form>	Delimit a form
accept-charset=list	Specify a list of character sets accepted by the server processing this form
action=url	Specify the URL of the application that processes the form (required)
enctype=encoding	Specify how the form element values are encoded
method=style	Specify the parameter-passing style — either get or post (required)
name=name	Supply a name for this form for use by JavaScript
onreset=applet	Specify an applet to be run when the form is reset
onsubmit=applet	Specify an applet to be run when the form is submitted
target=name	Specify the name of the frame or window to receive the results of the form after submission
<frame> ... </frame>	Define a frame within a frameset	*
bordercolor=color	Set the color of the frame's border
class=name	Specify a style class controlling the appearance of this tag
frameborder=n	If value is yes (Netscape only) or 1 (Netscape and Internet Explorer), enable frame borders; if value is no (Netscape only) or 0 (Netscape and Internet Explorer), disable frame borders
id=name	Define a name for this tag that is unique to this document
longdesc=url	Provide the URL of a document describing the contents of the frame
marginheight=n	Place n pixels of space above and below the frame contents
marginwidth=n	Place n pixels of space to the left and right of the frame contents
name=name	Define the name of the frame
noresize	Disable user resizing of the frame
scrolling=type	Always add scrollbars (yes), never add scrollbars (no), or, for Netscape only, add scrollbars when needed (auto)
src=url	Define the URL of the source document for this frame
style=style	Specify an inline style for this tag
title=string	Specify a title for this tag
<frameset> ... </frameset>	Define a collection of frames or other framesets	*
border=n	Set the thickness of the frame borders in this frameset
bordercolor=color	Define the color of the borders in this frameset
cols=list	Specify the number and width of frames within a frameset
frameborder=value	If value is yes (Netscape only) or 1 (Netscape and Internet Explorer), enable frame borders; if value is no (Netscape only) or 0 (Netscape and Internet Explorer), disable frame borders
framespacing=n	Define the thickness of the frame borders in this frameset
onblur=applet	Define an applet to be run when the mouse leaves this frameset
onfocus=applet	Define an applet to be run when the mouse enters this frameset
onload=applet	Define an applet to be run when this frameset is loaded
onunload=applet	Define an applet to be run when this frameset is removed from the display
rows=list	Specify the number and height of frames within a frameset
<hn> ... </hn>	The enclosed text is a level-n header, for level n from 1 to 6
align=type	Specify the heading alignment as either left (default), center, or right
<head> ... </head>	Delimit the beginning and end of the document head	*
dir=dir	Specify the rendering direction for text — either left to right (ltr) or right to left (rtl)
lang=language	Specify the language used for this tag's contents using a standard two-character ISO language name
profile=url	Provide the URL of a profile for this document
<hr>	Break the current text flow and insert a horizontal rule	*
align=type	Specify the rule alignment as either left, center (default), or right
class=name	Specify a style class controlling the appearance of the rule
color=color	Define the color of the rule
dir=dir	Specify the rendering direction for text — either left to right (ltr) or right to left (rtl)
id=name	Define a name for this tag that is unique to this document
lang=language	Specify the language used for this tag's contents using a standard two-character ISO language name
noshade	Do not use 3D shading to render the rule
onclick=applet	Specify an applet to be executed when the mouse button is clicked on this tag
ondblclick=applet	Specify an applet to be executed when the mouse button is double-clicked on this tag
onkeydown=applet	Specify an applet to be executed when a key is pressed down while this tag has input focus
onkeypress=applet	Specify an applet to be executed when a key is pressed and released while this tag has focus
onkeyup=applet	Specify an applet to be executed when a key is released while this tag has focus
onmousedown=applet	Specify an applet to be executed when a mouse button is pressed down on this tag
onmousemove=applet	Specify an applet to be executed when the mouse is moved over this tag
onmouseout=applet	Specify an applet to be executed when the mouse moves out of this tag's display area
onmouseover=applet	Specify an applet to be executed when the mouse moves into this tag's display area
onmouseup=applet	Specify an applet to be executed when a mouse button is released while over this tag
size=pixels	Set the thickness of the rule to an integer number of pixels
style=style	Specify an inline style for this tag
title=string	Specify a title for this tag
width=value or %	Set the width of the rule to either an integer number of pixels or a percentage of the page width
<html> ... </html>	Delimit the beginning and end of the entire Hypertext Markup Language document	*
dir=dir	Specify the rendering direction for text — either left to right (ltr) or right to left (rtl)
lang=language	Specify the language used for this tag's contents using a standard two-character ISO language name
version=string	Indicate the HTML version used to create this document
<i> ... </i>	Format the enclosed text in an italic typeface
<iframe> ... </iframe>	Define an inline frame	*
align=position	Set the position of the frame aligned to the top, center, or bottom of the surrounding text, or flush against the left or right margins with subsequent text flowing around the frame
class=name	Specify a style class controlling the appearance of the frame
frameborder=value	If value is 1, enable frame borders; if value is 0, disable frame borders
height=n	Set the height, in pixels, of the frame
id=name	Define a name for this tag that is unique to this document
longdesc=url	Provide the URL of a document describing the contents of the frame
marginheight=n	Place n pixels of space above and below the frame contents
marginwidth=n	Place n pixels of space to the left and right of the frame contents
name=name	Define the name of the frame
scrolling=type	Always add scrollbars (yes) or never add scrollbars (no)
src=url	Define the URL of the source document for this frame
style=style	Specify an inline style for this tag
title=string	Specify a title for this tag
width=n	Set the width, in pixels, of the frame
<ilayer> ... </ilayer>	Define an inline layer	*
above=name	Place this layer above the named layer
background=url	Specify a background image for the layer
below=name	Place this layer below the named layer
bgcolor=color	Specify the background color for the layer
class=name	Specify a style class controlling the appearance of this tag
clip=edge	Define the layer's clipping region, in pixels; if left and top are 0, they may be omitted
left=n	Define, in pixels, the position of the layer's left edge from the containing line of text
name=name	Provide a name for the layer
src=url	Supply the content of the layer from another document
style=style	Specify an inline style for this tag
top=n	Define, in pixels, the position of the layer's top edge from the containing line of text
visibility=value	Determine whether to show the layer, hide the layer, or inherit the visibility attribute from a containing layer
width=n	Define the width, in pixels, of the layer
z-index=n	Specify the layer's position in the stacking order
<img>	Insert an image into the current text flow
align=type	Align the image to either the top, middle, bottom (default), left, or right of the text in the line, or for Netscape, additionally to the absmiddle, baseline, or absbottom of the text
alt=text	Provide alternative text for non-image-capable browsers
border=n	Set the pixel thickness of the border around images contained within hyperlinks
controls	Add playback controls for embedded video clips
dynsrc=url	Specify the URL of a video clip to be displayed
height=n	Specify the height of the image in scan lines
hspace=n	Specify the space, in pixels, to be added to the left and right of the image
ismap	Indicate that the image is mouse-selectable when used within an <a> tag
longdesc=url	Provide the URL of a document describing the image
loop=value	Set the number of times to play the video; value may be an integer or the value infinite
lowsrc=url	Specify a low-resolution image to be loaded by the browser first, followed by the image specified by the src attribute
name=name	Provide a name for the image for use by JavaScript
onabort=applet	Provide an applet to be run if the loading of the image is aborted
onerror=applet	Provide an applet to be run if the loading of the image is unsuccessful
onload=applet	Provide an applet to be run if the loading of the image is successful
src=url	Specify the source URL of the image to be displayed (required)
start=start	Specify when to play the video clip — either fileopen or mouseover
usemap=url	Specify the map of coordinates and links that define the hypertext links within this image
vspace=n	Specify the vertical space, in pixels, added at the top and bottom of the image
width=n	Specify the width of the image in pixels
<input type=button>	Create a push-button element within a <form>
accesskey=char	Define the hot-key character for this element
disabled	Disable this control, making it inactive
name=name	Specify the name of the parameter to be passed to the forms-processing application if the input element is selected (required)
notab	Specify that this element is not part of the tabbing order
onblur=applet	Specify an applet to be run when the mouse leaves this control
onfocus=applet	Specify an applet to be run when the mouse enters this control
tabindex=n	Specify this element's position in the tabbing order
taborder=n	Specify this element's position in the tabbing order
value=string	Specify the value of the parameter sent to the forms-processing application if this form element is selected (required)
<input type=checkbox>	Create a checkbox input element within a <form>
accesskey=char	Define the hot-key character for this element
checked	Mark the element as initially selected
disabled	Disable this control, making it inactive
name=string	Specify the name of the parameter to be passed to the forms-processing application if the input element is selected (required)
notab	Specify that this element is not part of the tabbing order
readonly	Prevent user modification of this element
tabindex=n	Specify this element's position in the tabbing order
taborder=n	Specify this element's position in the tabbing order
value=string	Specify the value of the parameter sent to the forms-processing application if this form element is selected (required)
<input type=file>	Create a file-selection element within a <form>
accept=list	Specify list of MIME types that can be accepted by this element
accesskey=char	Define the hot-key character for this element
disabled	Disable this control, making it inactive
maxlength=n	Specify the maximum number of characters to accept for this element
name=name	Specify the name of the parameter that is passed to the forms-processing application for this input element (required)
notab	Specify that this element is not part of the tabbing order
onblur=applet	Specify an applet to be run when the mouse leaves this control
onchange=applet	Specify an applet to be run when the user changes the value of this element
onfocus=applet	Specify an applet to be run when the mouse enters this control
readonly	Prevent user modification of this element
size=n	Specify the number of characters to display for this element
tabindex=n	Specify this element's position in the tabbing order
taborder=n	Specify this element's position in the tabbing order
value=string	Specify the value of the parameter sent to the forms-processing application if this form element is selected (required)
<input type=hidden>	Create a hidden element within a <form>
name=name	Specify the name of the parameter that is passed to the forms-processing application for this input element (required)
value=string	Specify the value of this element that is passed to the forms-processing application
<input type=image>	Create an image input element within a <form>
accesskey=char	Define the hot-key character for this element
align=type	Align the image to either the top, middle, or bottom of the form element's text
alt=string	Provide an alternative description for the image
border=n	Set the pixel thickness of the border of the image
disabled	Disable this control, making it inactive
name=name	Specify the name of the parameter to be passed to the forms-processing application for this input element (required)
notab	Specify that this element is not part of the tabbing order
src=url	Specify the source URL of the image (required)
tabindex=n	Specify this element's position in the tabbing order
taborder=n	Specify this element's position in the tabbing order
usemap=url	Specify the URL of a map to be used with this image
<input type=password>	Create a content-protected text-input element within a <form>
accesskey=char	Define the hot-key character for this element
disabled	Disable this control, making it inactive
maxlength=n	Specify the maximum number of characters to accept for this element
name=name	Specify the name of the parameter to be passed to the forms-processing application for this input element (required)
notab	Specify that this element is not part of the tabbing order
onblur=applet	Specify an applet to be run when the mouse leaves this element
onchange=applet	Specify an applet to be run when the user changes the value of this element
onfocus=applet	Specify an applet to be run when the mouse enters this element
onselect=applet	Specify an applet to be run if the user clicks this element
readonly	Prevent user modification of this element
size=n	Specify the number of characters to display for this element
tabindex=n	Specify this element's position in the tabbing order
taborder=n	Specify this element's position in the tabbing order
value=string	Specify the initial value for this element
<input type=radio>	Create a radio-button input element within a <form>
accesskey=char	Define the hot-key character for this element
checked	Mark the element as initially selected
disabled	Disable this control, making it inactive
name=string	Specify the name of the parameter to be passed to the forms-processing application if the input element is selected (required)
notab	Specify that this element is not part of the tabbing order
readonly	Prevent user modification of this element
tabindex=n	Specify this element's position in the tabbing order
taborder=n	Specify this element's position in the tabbing order
value=string	Specify the value of the parameter sent to the forms-processing application if this form element is selected (required)
<input type=reset>	Create a reset button within a <form>
accesskey=char	Define the hot-key character for this element
disabled	Disable this control, making it inactive
notab	Specify that this element is not part of the tabbing order
tabindex=n	Specify this element's position in the tabbing order
taborder=n	Specify this element's position in the tabbing order
value=string	Specify an alternate label for the reset button (default is "Reset")
<input type=submit>	Create a submit button within a <form>
accesskey=char	Define the hot-key character for this element
disabled	Disable this control, making it inactive
name=name	Specify the name of the parameter that is passed to the forms-processing application for this input element (required)
notab	Specify that this element is not part of the tabbing order
tabindex=n	Specify this element's position in the tabbing order
taborder=n	Specify this element's position in the tabbing order
value=string	Specify an alternate label for the submit button, as well as the value passed to the forms-processing application for this parameter if this button is clicked
<input type=text>	Create a text-input element within a <form>
accesskey=char	Define the hot-key character for this element
disabled	Disable this control, making it inactive
maxlength=n	Specify the maximum number of characters to accept for this element
name=name	Specify the name of the parameter that is passed to the forms-processing application for this input element (required)
notab	Specify that this element is not part of the tabbing order
onblur=applet	Specify an applet to be run when the mouse leaves this element
onchange=applet	Specify an applet to be run when the user changes the value of this element
onfocus=applet	Specify an applet to be run when the mouse enters this element
onselect=applet	Specify an applet to be run if the user clicks this element
readonly	Prevent user modification of this element
size=n	Specify the number of characters to display for this element
tabindex=n	Specify this element's position in the tabbing order
taborder=n	Specify this element's position in the tabbing order
value=string	Specify the initial value for this element
<ins> ... </ins>	Delineate an inserted section of a document
cite=url	Cite a document dissatisfying the insertion
datetime=date	Specify the date and time of the insertion
<isindex>	Create a "searchable" HTML document (deprecated; do not use)	*
action=url	For Internet Explorer only, provide the URL of the program that performs the searching action
class=name	Specify a style class controlling the appearance of this tag
dir=dir	Specify the rendering direction for text — either left to right (ltr) or right to left (rtl)
id=name	Define a name for this tag that is unique to this document
lang=language	Specify the language used for this tag's contents using a standard two-character ISO language name
prompt=string	Provide an alternate prompt for the input field
style=style	Specify an inline style for this tag
title=string	Specify a title for this tag
<kbd> ... </kbd>	The enclosed text is keyboard-like input
<keygen>	Generate key information in a form	*
challenge=string	Provide a challenge string to be packaged with the key
name=name	Provide a name for the key
<label> ... </label>	Define a label for a form control
accesskey=char	Define the hot-key character for this label
for=name	Specify the form element associated with this label
onblur=applet	Specify an applet to be run when the mouse leaves this label
onfocus=applet	Specify an applet to be run when the mouse enters this label
<layer> ... </layer>	Define a layer	*
above=name	Place this layer above the named layer
background=url	Specify a background image for the layer
below=name	Place this layer below the named layer
bgcolor=color	Specify the background color for the layer
class=name	Specify a style class controlling the appearance of this tag
clip=edge	Define the layer's clipping region, in pixels; if left and top are 0, they may be omitted
left=n	Define, in pixels, the position of the layer's left edge from the containing document or layer
name=name	Provide a name for the layer
src=url	Supply the content of the layer from another document
style=style	Specify an inline style for this tag
top=n	Define, in pixels, the position of the layer's top edge from the containing document or layer
visibility=value	Determine whether to show the layer, hide the layer, or inherit the visibility attribute from a containing layer
width=n	Define the width, in pixels, of the layer
z-index=n	Specify the layer's position in the stacking order
<legend> ... </legend>	Define a legend for a form field set
accesskey=char	Define the hot-key character for this legend
align=position	Align the legend to the top, bottom, left, or right of the field set
<li> ... </li>	Delimit a list item in an ordered (<ol>) or unordered (<ul>) list
type=format	Set the type of this list element to the desired format — for <li> within <ol>: A (capital letters), a (lowercase letters), I (capital Roman numerals), i (lowercase Roman numerals), or 1 (Arabic numerals; default); for <li> within <ul>: circle, disc (default), or square
value=n	Set the number for this list item to n
<link>	Define a link between this document and another document in the document <head>
charset=charset	Specify the character set used to encode the target of this link
href=url	Specify the hypertext reference URL of the target document
hreflang=language	Specify the language used for the target's contents using a standard two-character ISO language name
media=list	Specify a list of media types upon which this object can be rendered
rel=relation	Indicate the relationship from this document to the target
rev=relation	Indicate the reverse relationship from the target to this document
type=string	Specify the MIME type for the linked document. Usually used in conjunction with links to stylists, when the type is set to text/css
<listing> ... </listing>	Same as <pre width=132> ... </pre> (deprecated; do not use)
<map> ... </map>	Define a map containing hot spots in a client-side image map
name=name	Define the name of this map (required)
<marquee> ... </marquee>	Create a scrolling-text marquee (Internet Explorer only)	*
align=position	Align the marquee to the top, middle, or bottom of the surrounding text
behavior=style	Define the marquee style to be scroll, slide, or alternate
bgcolor=color	Set the background color of the marquee
class=name	Specify a style class controlling the appearance of this tag
direction=dir	Define the direction, left or right, the text is to scroll
height=n	Define the height, in pixels, of the marquee area
hspace=n	Define the space, in pixels, to be inserted to the left and right of the marquee
loop=value	Set the number of times to animate the marquee; value is an integer or infinite
scrollamount=value	Set the number of pixels to move the text for each scroll movement
scrolldelay=value	Specify the delay, in milliseconds, between successive movements of the marquee text
style=style	Specify an inline style for this tag
vspace=n	Define the space, in pixels, to be inserted above and below the marquee
width=n	Define the width, in pixels, of the marquee area
<menu> ... </menu>	Define a menu list containing <li> tags
type=bullet	Set the bullet style for this list to either circle, disc (default), or square
<meta>	Provide additional information about a document	*
charset=name	Specify the character set to be used with this document
content=string	Specify the value for the meta-information (required)
dir=dir	Specify the rendering direction for text — either left to right (ltr) or right to left (rtl)
http-equiv=string	Specify the HTTP equivalent name for the meta-information and cause the server to include the name and content in the HTTP header for this document when it is transmitted to the client
lang=language	Specify the language used for this tag's contents using a standard two-character ISO language name
name=string	Specify the name of the meta-information
scheme=scheme	Specify the profile scheme used to interpret this property
<multicol> ... </multicol>	Define a multicolumn text flow	*
class=name	Specify a style class controlling the appearance of this tag
cols=n	Specify the number of columns
gutter=n	Define the spacing, in pixels, between columns
style=style	Specify an inline style for this tag
width=n	Define the width of the entire column group
<nextid>	Define the next valid document entity identifier (obsolete; do not use)	*
n=n	Set the next ID number
<nobr> ... </nobr>	No breaks allowed in the enclosed text	*
<noembed> ... </noembed>	Define content to be presented by browsers that do not support the <embed> tag	*
<noframes> ... </noframes>	Define content to be presented by browsers that do not support frames
<noscript> ... </noscript>	Define content to be presented by browsers that do not support the <script> tag
<object>	Insert an object into a document
align=position	Align the object with the surrounding text (texttop, middle, textmiddle, baseline, textbottom, or center) or against the margin with subsequent text flowing around the object (left or right)
archive=list	Specify a list of URLs of archives containing resources used by this object
border=n	Define, in pixels, the object's border width
classid=url	Supply the URL of the object
codebase=url	Supply the URL of the object's code base
codetype=type	Specify the MIME type of the code base
data=url	Supply data for the object
declare	Declare this object without instantiating it
height=n	Define, in pixels, the height of the object
hspace=n	Provide extra space, in pixels, to the right and left of the object
name=name	Define the name of this object
notab	Do not make this object part of the tabbing order
shapes	Specify that this object has shaped hyperlinks
standby=string	Define a message to display while the object loads
tabindex=n	Specify this object's position in the document tab order
type=type	Specify the MIME type for the object data
usemap=url	Define an image map for use with this object
vspace=n	Provide extra space, in pixels, above and below the object
width=n	Define, in pixels, the width of the object
<ol> ... </ol>	Define an ordered list containing numbered (ascending) <li> elements
compact	Present the list in a more compact manner
start=n	Start numbering the list at n, instead of 1
type=format	Set the numbering format for this list to either A (capital letters), a (lowercase letters), I (capital Roman numerals), i (lowercase Roman numerals), or 1 (Arabic numerals; default)
<optgroup> ... </optgroup>	Define a group of options within a <select> element
disabled	Disable this group, making it inactive
label=string	Provide a label for this group
<option> ... </option>	Define an option within a <select> item in a <form>
disabled	Disable this option, making it inactive
label=string	Provide a label for this option
selected	Make this item initially selected
value=string	Return the specified value to the forms-processing application instead of the <option> contents
<p> ... </p>	Start and end a paragraph
align=type	Align the text within the paragraph to left, center, or right
<param> ... </param>	Supply a parameter to a containing <applet>	*
id=name	Define the unique identifier for this parameter
name=name	Define the name of the parameter
type=type	Specify the MIME type of the parameter
value=string	Define the value of the parameter
valuetype=type	Define the type of the value attribute, either as data, ref (the value is a URL pointing to the data), or object (the value is the name of an object in this document)
<plaintext>	Render the remainder of the document as preformatted plain text
<pre> ... </pre>	Render the enclosed text in its original, preformatted style, honoring line breaks and spacing verbatim
width=n	Size the text, if possible, so that n characters fit across the display window
<q> ... </q>	The enclosed text is an inline quotation
cite=url	Specify the URL of the source of the quoted material
<s> ... </s>	Same as <strike>; the enclosed text is struck through with a horizontal line
<samp> ... </samp>	The enclosed text is a sample
<script> ... </script>	Define a script within a document	*
charset=encoding	Specify the character set used to encode the script
defer	Defer execution of this script
language=encoding	Specify the language used to create the script
src=url	Provide the URL of the document containing the script
type=encoding	Specify the MIME type of the script
<select> ... </select>	Define a multiple-choice menu or scrolling list within a <form>, containing one or more <option> tags
disabled	Disable this control, making it inactive
multiple	Allow the user to select more than one <option> within the <select>
name=name	Define the name for the selected <option> values that, if selected, are passed to the forms-processing application (required)
onblur=applet	Specify an applet to be run when the mouse leaves this element
onchange=applet	Specify an applet to be run when the user changes the value of this element
onfocus=applet	Specify an applet to be run when the mouse enters this element
size=n	Display n items using a pull-down menu for size=1 (without multiple specified) and a scrolling list of n items otherwise
tabindex=n	Specify this element's position in the tabbing order
<server> ... </server>	Define a LiveWire script	*
<small> ... </small>	Format the enclosed text using a smaller typeface
<spacer>	Create blank space in a document	*
align=position	Align a block spacer with either the surrounding text (top, texttop, middle, absmiddle, baseline, bottom, or absbottom) or against a margin with subsequent text flowing around the spacer (left or right)
height=n	Define the height, in pixels, of a block spacer
size=n	Define the length, in pixels, of a horizontal or vertical spacer
type=type	Set the spacer type to block, horizontal, or vertical
width=value	Define the width, in pixels, of a block spacer
<span> ... </span>	Define a span of text for style application
<strike> ... </strike>	Strike through the enclosed text with a horizontal line
<strong> ... </strong>	Strongly emphasize the enclosed text
<style> ... </style>	Define one or more document-level styles	*
dir=dir	Specify the rendering direction for the title text — either left to right (ltr) or right to left (rtl)
lang=language	Specify the language used for this tag's title using a standard two-character ISO language name
media=list	Specify a list of media types upon which this object can be rendered
title=string	Specify a title for this tag
type=type	Define the format of the styles (always text/css)
<sub> ... </sub>	Format the enclosed text as subscript
<sup> ... </sup>	Format the enclosed text as superscript
<table> ... </table>	Define a table
align=position	Align the table in the center and flow the subsequent text around the table
background=url	Define a background image for the table
bgcolor=color	Define the background color for the entire table
border=n	Create a border n pixels wide
bordercolor=color	Define the border color for the entire table
bordercolordark=color	Define the dark border-highlighting color for the entire table
bordercolorlight=color	Define the light border-highlighting color for the entire table
cellpadding=n	Place n pixels of padding around each cell's contents
cellspacing=n	Place n pixels of spacing between cells
cols=n	Specify the number of columns in this table
frame=type	Define where table borders are displayed — either border (default), void, above, below, hsides, lhs, rhs, vsides, or box
height=n	Define the height of the table in pixels
hspace=n	Specify the horizontal space, in pixels, added at the left and right of the table
nowrap	Suppress text wrapping in table cells
rules=edges	Determine where inner dividers are drawn — either all (default), groups (only around row and column groups), rows, cols, or none
summary=string	Provide a summary description of this table
valign=position	Align text in the table to either the top, center, bottom, or baseline
vspace=n	Specify the vertical space, in pixels, added at the top and bottom of the table
width=n	Set the width of the table to n pixels or a percentage of the window width
<tbody> ... </tbody>	Create a row group within a table
align=position	Align the table body cells' contents to the left, center, or right
char=char	Specify the body group cell alignment character
charoff=value	Specify the offset within the cells of the alignment position
valign=position	Vertically align the body group cells' contents to the top, center, bottom, or baseline of the cell
<td> ... </td>	Define a table data cell
abbr=string	Specify an abbreviation for the cell's contents
align=position	Align the cell contents to the left, center, or right
axis=string	Provide a name for a related group of cells
background=url	Define a background image for this cell
bgcolor=color	Define the background color for the cell
bordercolor=color	Define the border color for the cell
bordercolordark=color	Define the dark border-highlighting color for the cell
bordercolorlight=color	Define the light border-highlighting color for the cell
char=char	Specify the cell alignment character
charoff=value	Specify the offset of the alignment position within the cell
colspan=n	Have this cell straddle n adjacent columns
headers=list	Provide a list of header cell names associated with this cell
height=n	Define the height, in pixels, for this cell
nowrap	Do not automatically wrap and fill text in this cell
rowspan=n	Have this cell straddle n adjacent rows
scope=scope	Define the scope of this header cell — either row, col, rowgroup, or colgroup
valign=position	Vertically align this cell's contents to the top, center, bottom, or baseline of the cell
width=n	Set the width of this cell to n pixels or a percentage of the table width
<textarea> ... </textarea>	Define a multiline text-input area within a <form>; the content of the <textarea> tag is the initial, default value
accesskey=char	Define the hot-key character for this element
cols=n	Display n columns (characters) of text within the text area
disabled	Disable this control, making it inactive
name=string	Define the name for the text-area value that is passed to the forms-processing application (required)
onblur=applet	Specify an applet to be run when the mouse leaves this element
onchange=applet	Specify an applet to be run when the user changes the value of this element
onfocus=applet	Specify an applet to be run when the mouse enters this element
onselect=applet	Specify an applet to be run if the user clicks this element
readonly	Prevent user modification of this element
rows=n	Display n rows of text within the text area
tabindex=n	Specify this element's position in the tabbing order
wrap=style	Set word wrapping within the text area to off, virtual (display wrap, but do not transmit to server), or physical (display and transmit wrap)
<tfoot> ... </tfoot>	Define a table footer
align=position	Align the footer cells' contents to the left, center, or right
char=char	Specify the cell alignment character
charoff=value	Specify the offset within the cell of the alignment position
valign=position	Vertically align the footer cells' contents to the top, center, bottom, or baseline of the cell
<th> ... </th>	Define a table header cell
abbr=string	Specify an abbreviation for the cell's contents
align=position	Align the cell contents to the left, center, or right
axis=string	Provide a name for a related group of cells
background=url	Define a background image for this cell
bgcolor=color	Define the background color for the cell
bordercolor=color	Define the border color for the cell
bordercolordark=color	Define the dark border-highlighting color for the cell
bordercolorlight=color	Define the light border-highlighting color for the cell
char=char	Specify the cell alignment character
charoff=value	Specify the offset of the alignment position within the cell
colspan=n	Have this cell straddle n adjacent columns
headers=list	Provide a list of header cell names associated with this cell
height=n	Define the height, in pixels, for this cell
nowrap	Do not automatically wrap and fill text in this cell
rowspan=n	Have this cell straddle n adjacent rows
scope=scope	Define the scope of this header cell — either row, col, rowgroup, or colgroup
valign=position	Vertically align this cell's contents to the top, center, bottom, or baseline of the cell
width=n	Set the width of this cell to n pixels or a percentage of the table width
<thead> ... </thead>	Define a table heading
align=position	Define the horizontal text alignment in the heading — either left, center, right, or justify
char=char	Specify the cell alignment character for heading cells
charoff=value	Specify the offset within the cells of the alignment position
valign=position	Define the vertical text alignment in the heading — either left, center, right, or justify
<title> ... </title>	Define the HTML document's title	*
dir=dir	Specify the rendering direction for text — either left to right (ltr) or right to left (rtl)
lang=language	Specify the language used for this tag's contents using a standard two-character ISO language name
<tr> ... </tr>	Define a row of cells within a table
align=type	Align the cell contents in this row to the left, center, or right
background=url	Define a background image for this cell
bgcolor=color	Define the background color for this row
bordercolor=color	For Internet Explorer, define the border color for this row
bordercolordark=color	For Internet Explorer, define the dark border-highlighting color for this row
bordercolorlight=color	For Internet Explorer, define the light border-highlighting color for this row
char=char	Specify the cell alignment character for this row
charoff=value	Specify the offset of the alignment position within the cells of this row
nowrap	Disable word wrap for all cells in this row
valign=position	Vertically align the cell contents in this row to the top, center, bottom, or baseline of the cell
<tt> ... </tt>	Format the enclosed text in teletype-style (monospaced) font
<u> ... </u>	Underline the enclosed text
<ul> ... </ul>	Define an unordered list of bulleted <li> elements
compact	Display the list in a more compact manner, if possible
type=bullet	Set the bullet style for this list to either circle, disc (default), or square
<var> ... </var>	The enclosed text is a variable's name
<wbr>	Indicate a potential word break point within a <nobr> section	*
<xmp> ... </xmp>	Same as <pre width=80> ... </pre> (deprecated; do not use)