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CDF

Channel Definition Format, like HTML, has become a standard. Despite its imposing acronym, CDF is nothing to be frightened about; it's simply a gathering of URLs with channel-friendly content with instructions that enable your PC to fetch the requisite data for you.

The example below is a simple CDF file embedding on your PC an Image, Icon and a set of URL's that point to your Channel, Active Desktop Component or Screen saver.

 

<CHANNEL HREF="http://www.pcplus.co.uk/pcplus/channel">
<SELF HREF="http://www.pcplus.co.uk/pcplus.cdf">

Description: CHANNEL HREF sets the home page. SELF is the code you are looking at.


<TITLE>PcPlus Channel</TITLE>
<LOGO HREF="http://www.pcplus.co.uk\logo.ico" STYLE="ICON"/>
<LOGO HREF="http://www.pcplus.co.uk\logo.gif" STYLE="IMAGE"/>

Description: A Title, Logo Button and Icon are specified.

<TITLE>The First Page</TITLE>
<ABSTRACT>This is the abstract description Main page.</ABSTRACT>


<ITEM HREF="http://www.pcplus.co.uk/firstpage.htm">
<LOGO HREF="http://www.pcplus.co.uk\first.ico "STYLE="ICON"/>
</ITEM>

Description: The First Secondary page is listed, a Pop-up Description, HREF and Icon are added. To add more pages you would cut and paste this below and change the properties to a second page, etc.

<ITEM HREF="http://www.pcplus.co.uk\.ssaver.htm">
<USAGE VALUE="Screen saver"></USAGE>
</ITEM>

Description: A screen saver will be activated after x minutes of non use. That Screen saver can be one of your HTML pages.


<SCHEDULE>
<INTERVALTIME DAY="1" />
<EARLIESTTIME HOUR="1" />
<LATESTTIME HOUR="5" />
</SCHEDULE>

Description: The SCHEDULE instructs the Subscription Wizard. The Channel will refresh its content once a day, between 1 and 5 (P.M.). This interval is included so that large sites will not be hobbled by mass hits on the hour mark. Your machine will connect at a random time between the EARLIEST and LATEST HOUR.


</CHANNEL>

 

If you try to add this CHANNEL, it will work but you are much better off visiting the PC Plus Channel page at http://www.pcplus.co.uk/channel/

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