diff --git a/tmpl.xsl b/tmpl.xsl
new file mode 100644
index 0000000..9fb9b4b
--- /dev/null
+++ b/tmpl.xsl
@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xsl:stylesheet version="1.0"
+    xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
+
+  <!-- identity copy -->
+  <xsl:template match="@*|node()">
+    <xsl:copy>
+      <xsl:apply-templates select="@*|node()" />
+    </xsl:copy>
+  </xsl:template>
+
+  <!-- modify programme/episode-num -->
+  <xsl:template match="programme[season-num and episode-num]/episode-num">
+    <xsl:variable name="s" select="../season-num"/>
+    <xsl:variable name="e" select="."/>
+    
+    <xsl:variable name="s2">
+      <xsl:choose>
+        <xsl:when test="string-length($s) = 1">
+          <xsl:value-of select="concat('0',$s)"/>
+        </xsl:when>
+        <xsl:otherwise>
+          <xsl:value-of select="$s"/>
+        </xsl:otherwise>
+      </xsl:choose>
+    </xsl:variable>
+
+    <xsl:variable name="e2">
+      <xsl:choose>
+        <xsl:when test="string-length($e) = 1">
+          <xsl:value-of select="concat('0',$e)"/>
+        </xsl:when>
+        <xsl:otherwise>
+          <xsl:value-of select="$e"/>
+        </xsl:otherwise>
+      </xsl:choose>
+    </xsl:variable>
+
+    <episode-num>
+      <xsl:value-of select="concat('S',$s2,'E',$e2)"/>
+    </episode-num>
+  </xsl:template>
+
+</xsl:stylesheet>