[xsl] Understanding when to use apply-templates with no selector

I see this a lot:

<xsl:apply-templates />

I have even used it but to be honest, I'm not sure I undertand it
completely.  Given the following xml:

<a>
 <b>
 <c>
 <d>
</a>

If the current context is <a> and you call <xsl:apply-templates />,
the following template matches will hit:
match="a"
match="b"
match="*"  <!-- which picks up on a match of C and D -->

What else gets matched?  If <a> looks like this <a att1="123"
att2="456">, we better have attribute matches too?  What about
comments and processing instructions?  So if you have.
<a>
 <!-- this is a comment --!>
  <?this is a processing instruction?>
  <b>
</a>

Is there a best practice here to mention?

Thanks, just thinking out loud on this.
Karl..



-- 
Karl Stubsjoen
MeetScoresOnline.com
(602) 845-0006

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