indentation in xsl

Hello XSL gurus,

I am trying to do some recursive transforming with an identation.
Currently I have no clue how to get started. My XML looks like this

<folder name="Test1">
  <folder name="SubTest1"/>
  <folder name="SubTest2">
     <folder name="SubSubTest2"/>
  </folder>
</folder>

Now I want to transform it with XSL but put a number of spaces in front
depending
on the depth of the particular folder.

Any suggestion is welcome

WBR

Andreas



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