Re: [xsl] Converting Duration

If I have varying durations within an element, such as this:

<Durations>
	<Duration>PT8H</Duration>
	<Duration>PT8H15M</Duration>
	<Duration>PT12H10M</Duration>
</Durations>

how can I scan through and strip out the letters?

Stripping letters can be achieve by translating them to nothing:
 <xsl:template match="Duration">
  <xsl:value-of select="translate(.,'PTHSM','')"/>
 </xsl:template>
Of course, you can delete 'ABCD...' or whatever.

I'm not sure what stripping the letters gives you, nor what you mean
by "scan through". For more help, you'll have to supply samples of the
expected output.