HTML and CSS Reference
hh=two-digit hour (00 to 23) (24-hour clock not AM or PM)
mm=two-digit minute (00 to 59)
ss=two-digit second (00 to 59)
tzd=time zone designator
The time zone designator is either Z , which indicates Universal Time Coordinate or
coordinated universal time format (UTC), or + hh : mm , which indicates that the time is a local
time that is hh hours and mm minutes ahead of UTC. Alternatively, the format for the time
zone designator could be - hh : mm , which indicates that the local time is behind UTC. Note
that the letter T actually appears in the string, all digits must be used, and 00 values for
minutes and seconds might be required. An example value for the datetime attribute
might be 2009-10-6T09:15:00-05:00 , which corresponds to October 6, 2010, 9:15 A . M .,
U.S. Eastern Standard Time.
<p> We have the lowest prices in the galaxy! <ins cite="http://www
New rates are effective in 2010.
HTML 4, 4.01, 5
XHTML 1.0, 1.1
Firefox 1+, Internet Explorer 4+,
Netscape 6+, Opera 4+, Safari 1+
• Browsers can render inserted ( <ins> ) or deleted ( <del> ) text in a different style to
show the changes that have been made to the document. Typically, newly inserted
entries are underlined and deletions appear with strikethrough. In theory, a browser
could have a way to show a revision history on a document, but generally this is left
up to scripting or the environment the page is built in.
<isindex> (Index Prompt)
This element indicates that a document has an associated searchable keyword index. When
a browser encounters this element, it inserts a query entry field at that point in the
document. The viewer can enter query terms to perform a search. This element is
deprecated under the strict HTML and XHTML specifications and should not be used.
Standard Syntax (Transitional Only)
dir="ltr | rtl"
href="URL" (nonstandard but common)
id="unique alphanumeric identifier"
title="advisory text" />