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Posted by cwdjrxyz on 05/03/07 03:20
On May 2, 2:02 pm, cwdjrxyz <spamtr...@cwdjr.info> wrote:
> On May 2, 11:29 am, Toby A Inkster <usenet200...@tobyinkster.co.uk>
> wrote:
>
> > cwdjrxyz wrote:
> > > An xhtml page can be all html, all xml, or any combination thereof.
>
> > An XHTML page is always all HTML *and* all XML by definition!
>
> > > If the xhtml page contains some xml content, the xml likely will not
> > > work properly if it is treated as text/html.>
> > Assuming that you mean pages which extend XHTML by using elements from
> > other namespaces, yes you need to use an XML MIME type for these if you
> > expect them to work, but they're not valid XHTML anyway.
>
> One can serve only a html page such as html 4.01 that does not include
> xml code. One can serve only an xml page that does not include any
> html content. Often a "reader" or "viewer" program is required for
> many xml languages on current browsers. The intent of xhtml is to
> allow both what we use on an html and xml page to be served on the
> same page according to some defined rules. With the present state of
> browsers, we still may need a "viewer" or "reader" program to render
> the content based on xml in a usable form. Thus I would say that an
> xhtml page can contain what we could serve as html 4.01, for example,
> or it can contain what we could serve as xml for example, or both. Of
> course when an html page is converted to xhtml, xml rules take over
> and everything must be closed, etc. This is because xml is much more
> fussy about exact fromat than html. The structure of xhtml is much
> closer to xml than html.
>
> As an example, how do you serve a SMIL page as on a xhtml page? One
> way is to use a recent Real player to handle the SMIL xml language.
> One can for example use a .rpm playlist/redirector Real file to direct
> to the SMIL external xml file so that Real player kicks in and handles
> the SMIL file. The page validates properly as xhtml if correctly
> coded. At some point hopefully most browsers will support W3C SMIL 2
> directly so that you do not have to use a viewer program. In that case
> the SMIL xml would be handled directly by the xhtml page.
To elaborate, a SMIL file is a special type of xml file with an
extension .smil and a Doctype and w3c dod. To see a complete SMIL
file, validate http://www.cwdjr.net/ram/realmix.smil at the w3c. The
validator there will validate SMIL and several other types of files
that are of sufficient importance to have their own special
specifications and extensions rather than a general .xml or .xhtml
one. If you link to this SMIL xml file directly, you may or may not
get a display, depending on if you have a "viewer" such as the Real
player and how your viewers or players are configured. In some cases,
you may get the QT player which has only limited SMIL support and will
not work for this SMIL 2 page. However you can, on your xhtml page,
link to a .rpm playlist/redirector file. This is understood by the
Real player and automatically starts playing the SMIL page in the Real
player. The Real player is the only one of the more common free
players that viewers are likely to have that will play this SMIL page,
although there are some expensive SMIL viewers one can buy that
sometimes are used for media on internal networks.
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