index_A

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<a> tags 2nd 3rd [See also hyperlinks]
    hyperlink states
    linking external documents
    nesting restrictions
abbr attribute (<th> and <td>)
<abbr> tags
above attribute (<layer>)
absbottom, absmiddle values 2nd [See also alignment]
absolute font size
absolute URLs 2nd
    base and relative URLs, combining
accept attribute (<input type=file>)
accept-charset attribute (<form>)
accesskey attribute
    <a>
    <legend>
    form controls
<acronym> tags
action attribute
    <form>
    <isindex>
action buttons (forms)
\:active pseudoclass
ActiveX technology
<address> tags
addresses
    IP addresses 2nd
    XML DTD, defining for
adjacent selectors
Advanced Research Projects Agency (ARPA)
\:after pseudoelement 2nd
align attribute
    <applet>
    <caption>
    <div>
    <embed>
    <h#>
    <hr>
    <iframe>
    <img> 2nd
    <input type=image>
    <legend>
    <marquee>
    <object>
    <p>
    <spacer>
    <table>
    <th> and <td>
    <tr>
alignment [See also align attribute; format; page layout]
    <center> tags
    form elements 2nd
    frames
    headings
    horizontal rules
    image buttons (forms)
    images 2nd 3rd
    layers 2nd
    sections
    tables
        captions
        cell contents 2nd
        rows
    text 2nd
        in marquees
        paragraphs
    whitespace blocks
alink attribute (<body>)
all value (style media)
alt attribute
    <applet>
    <area>
    <img>
alternate value (marquee behavior)
ampersand (&)
    entities 2nd 3rd
    in URLs
    in XHTML
anchors [See also <a> tags; hyperlinks]2nd
animation
    frame-by-frame (GIF)
    of text
annotated lists [See definition lists]
anonymous FTP
<applet> tags
applets 2nd 3rd
application/x-www-form-urlencoded encoding
archive attribute
    <applet>
    <object>
<area> tags 2nd 3rd
ARPA (Advanced Research Projects Agency)
articles (newsgroups), identifiers for
ASCII text file format, saving HTML/XHTML documents in
at-rules
    @font-face
    @import
    @media
    @page
attribute selectors
    supporting browsers
attributes
    for <body> tags
    deprecated [See deprecated attributes]
    HTML tags
        core attributes
    images, enabling JavaScript manipulation
    XHTML
        case sensitivity in
        quoted values
        values for valueless HTML attributes
    XML
        declaring in DTD
        required and default
        values for
audience, designing for
audio [See also multimedia]2nd 3rd
    <bgsound> tags
    client-pull feature for
    mixing
    properties
aural value (style media)
authoring tools for XHTML pages
automation, document
AVI movies 2nd [See also video]
axis attribute (<th> and <td>)
azimuth property