Selection of all child elements or all attributes of an element

      <xsl:stylesheet
                  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                  version="2.0">
            <xsl:output  method="xml"
                        indent="yes"
                        omit-xml-declaration="yes"/>

            <xsl:template  match="/">
                  <xsl:apply-templates  select="aaa"/>
            </xsl:template>

            <xsl:template  match="aaa">
                  <xxx>
                        <xsl:apply-templates  select="*"/>
                  </xxx>
                  <yyy>
                        <xsl:apply-templates  select="@*"/>
                  </yyy>
            </xsl:template>

            <xsl:template  match="*">
                  <z1>
                        <xsl:value-of  select="name()"/>
                        <xsl:text>: </xsl:text>
                        <xsl:value-of  select="."/>
                  </z1>
            </xsl:template>

            <xsl:template  match="@*">
                  <z2>
                        <xsl:value-of  select="name()"/>
                        <xsl:text>: </xsl:text>
                        <xsl:value-of  select="."/>
                  </z2>
            </xsl:template>

      </xsl:stylesheet>

      <aaa  p="1"
                  r="2"
                  s="3">
            <bbb>B</bbb>
            <ccc>C</ccc>
            <ddd>D</ddd>
      </aaa>

      <xxx>
            <z1>bbb: B</z1>
            <z1>ccc: C</z1>
            <z1>ddd: D</z1>
      </xxx>
      <yyy>
            <z2>p: 1</z2>
            <z2>r: 2</z2>
            <z2>s: 3</z2>
      </yyy>