<xsl:apply-templates/> call moduses <h3>...</h3/> part of the output by 
going through all children of Chapter (Section element in this case) and 
matching it to appropriate template (<xsl:template match="Section"><h3>... 
in this case).
I suggest XSLT Programmer's Reference 2nd Edition by Michael H. Kay - an 
exelent reference book on XSLT


"Raymond Du" <rdrd@y...> wrote in message 
news:%23YWvkv5REHA.2412@T......
> Thank you for the response, however I must be too confused to understand. 
> I
> changed the xsl file a bit.
>
> Now my xsl file looks like this:
> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
> version="1.0">
> <xsl:template match="Chapter">
> <h2>
>  Chapter
>  <xsl:value-of select="@number"/>:
>  <xsl:value-of select="@title"/>
> </h2>
> <xsl:apply-templates />
>  </xsl:template>
> <xsl:template match="Section">
> <h3>
>  <xsl:value-of select="@title"/>
> </h3>
>  </xsl:template>
> </xsl:stylesheet>
>
> My xml file looks like:
> <Chapter number="13" title="Viewing XML Data on the Web">
> <Section title="Going from XML to HTML"/>
> <Section title="Serving Up Your XML Data"/>
> </Chapter>
>
>
> The result html:
> <h2>Chapter 13: Viewing XML Data on the Web</h2>
> <h3>Going from XML to HTML</h3>
> <h3>Serving Up Your XML Data</h3>
>
> If I removed <xsl:apply-templates /> from xsl file, the html will be:
> <h2>Chapter 13: Viewing XML Data on the Web</h2>
>
> So what is <xsl:apply-templates /> for on this occasion? There is only one
> Chapter element in the whole xml document, it should not make any 
> difference
> whether it tries to match the children or not.
>
> Thanks Again
>
>
> "Yan Leshinsky" <yanl@o...> wrote in message
> news:ehdnQe4REHA.3344@T......
>> <xsl:apply-templates/> will try to match all children of the current
> element
>> against templates your stylesheet defined. The reason why you don't see
> any
>> difference is that content of the Chapter element doesn't match any of 
>> the
>> templates.
>>
>> "Raymond Du" <rdrd@y...> wrote in message
>> news:OCFwmN3REHA.2936@T......
>> > Hi,
>> >
>> > I am new xsl, I could not understand what apply-templates do, say :
>> >
>> > <xsl:template match="Chapter">
>> > <h2>
>> >  Chapter
>> >  <xsl:value-of select="@number"/>:
>> >  <xsl:value-of select="@title"/>
>> > </h2>
>> > <xsl:apply-templates />
>> >  </xsl:template>
>> >
>> > The ouput I have is exactly the same whether it has apply-templates tag
> or
>> > not.
>> >
>> > Thanks in Advance
>> >
>> >
>>
>>
>
>