XSLT xsl:sequence. What is it good for..?

Question

I know the following question is a little bit of beginners but I need your help to understand a basic concept.

I would like to say first that I\'m a XSLT programmer

Answer 1

The most common use case for xsl:sequence is to return a result from xsl:function.

But it can also be handy in other contexts, for example

The key thing here is that it returns references to the original nodes, it doesn't make new copies.