> I am just at the beginning using xslt. Right now I am 
> doubting my comprehension of xslt. I am trying to transform 
> an xml file into another xml file just wishing to be able to 
> add a new element into my result file. I thought I should be 
> able to keep all my already existing tags in the result file. 
> Am I wrong? They all vanish. Is there a way to keep them?

yes. You're doing something wrong, but unless you show us what you're
doing, it's impossible to say what.
> 
> While adding a new element I only get the result <entry/>. 
> Actually I would like to enclose some more elements like this 
> <entry>...</entry>.  
> 
> The last question is, whether it is possible to ask wether an 
> element is filled or not when using <xsl:if> or <xsl:choose>.
> 
Yes. It depends exactly what you mean by "filled". For example, which of
the following are "filled"?:

 <a/>
 <a><!-comment--></a>
 <a>   </a>
 <a><b/></a>

if the answer is none of them, then you probably want:

<xsl:if test="normalize-space(a)">

Michael Kay
Software AG
home: Michael.H.Kay@xxxxxxxxxxxx
work: Michael.Kay@xxxxxxxxxxxxxx 


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