The active schema does not support the element 'xml'

18 Nov 2004 1:31 AM

David C. Allen

I am trying to insert an xml data island into a htm file that I am using for
a help file. When I insert the lines of xml, the <xml> tag is underlined in
red in VS2003 and the message says "The active schema does not support the
element 'xml'.

the html is as follows

<HTML xmlns:MSHelp="http://msdn.microsoft.com/mshelp">
<HEAD>
<meta name="vs_targetSchema" content="HTML 4.0">
<TITLE>Setting Options</TITLE>

<xml><MSHelp:Keyword Index="K" Term="Random" />
<MSHelp:Keyword Index="K" Term="Options" />
</xml>
</HEAD>
<BODY>
<h1>Setting options</h1>
<IMG alt="" src="options.jpg">
This is the options form of the Random Number Server.
Enter the minimum and maximum values you would like to set
for the random numbers and click OK. You can also click Cancel to
keep the current settings.
</BODY>
</HTML>

19 Nov 2004 4:15 AM

Derek Harmon

"David C. Allen" <dall***@avci.net> wrote in message news:%23urXm5QzEHA.2752@TK2MSFTNGP11.phx.gbl...
>I am trying to insert an xml data island into a htm file that I am using for
> a help file. When I insert the lines of xml, the <xml> tag is underlined in
> red in VS2003 and the message says "The active schema does not support the
> element 'xml'.
: :
> <meta name="vs_targetSchema" content="HTML 4.0">

Nowhere in the HTML 4.0 specification does <xml> appear,

http://www.w3.org/TR/html4/

nor the DTD,

http://www.w3.org/TR/html4/sgml/dtd.html

HTML lets you type any tag you want into an HTML document, and browsers
that don't understand the tag will ignore the tag (but may display text nodes).
The <xml> tag is part of Internet Explorer's support for XML Data Islands,
but it isn't strictly HTML.

The red squiggle is generated by Visual Studio .NET to notify you that you've
diverged from the schema it has for HTML 4.0. It uses this schema for Intelli-
Sense. Aside from that, you can go ahead and enter any tags not supported
by the schema.

Derek Harmon