xsl:apply-templates problem

[Bipul Kumar Singh]

Hi,

I have a xslt
<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl utput omit-xml-declaration="yes" method="xml" indent="yes" encoding="iso8859-1"/>
<xsl:key name="speaker" match="SPEECH" use="SPEAKER"/>
<xsl:template match="/">
<!-- Do this to suppress the display of all the text in the document-->
<SCENE>
<xsl:apply-templates select="SCENE/SPEECH[count(. | key('speaker', SPEAKER)[1]) = 1]/SPEAKER"/>
<!--<xsl:apply-templates select="//SPEAKER"/>-->
</SCENE>
</xsl:template>
<xsl:template match="SPEAKER">
<xsl:variable name="temp" select="."/>
<LINES>
<!-- Collect all of the lines spoken by the current speaker -->
<SPEAKER>
<xsl:value-of select="$temp"/>
</SPEAKER>
<xsl:for-each select="//SPEECH[SPEAKER=$temp]/LINE">
<LINE>
<xsl:value-of select="."/>
</LINE>
</xsl:for-each>
</LINES>
</xsl:template>
</xsl:stylesheet>

which i want to apply to this xml
<?xml version="1.0" encoding="UTF-8"?>
<SCENE>
<SPEECH>
<SPEAKER>BERNARDO</SPEAKER>
<LINE>Who's there?</LINE>
</SPEECH>
<SPEECH>
<SPEAKER>FRANCISCO</SPEAKER>
<LINE>Nay, answer me: stand, and unfold yourself.</LINE>
</SPEECH>
<SPEECH>
<SPEAKER>BERNARDO</SPEAKER>
<LINE>Long live the king!</LINE>
</SPEECH>
<SPEECH>
<SPEAKER>FRANCISCO</SPEAKER>
<LINE>Bernardo?</LINE>
</SPEECH>
</SCENE>
-----------------------------------------------------------------

Can anyone pl. tell me how is this XSLT working? I mean how the xsl:apply-templates is working here in conjunction with key() and count() !!!

I'm stumped and not able to figure it out

Thanks in advance

Regds,
Bipul