Sort column in table

I could swear I've seen some talk about doing this but couldn't seem to
find in the archives.
 
Can anybody give me a clue how to sort the rows by the nomen column
number 1?
 
Here is my table 
Thanks in advance
 
<xsl:template match="supply"> 
  <fo:table-row text-indent="-2cm">
 <xsl:apply-templates/>
  </fo:table-row>
</xsl:template>
 
<xsl:template match="nomen">
    <fo:table-cell height="6mm" display-align="before">
        <fo:block text-align="left">
            <xsl:value-of select="."/>
        </fo:block>
    </fo:table-cell>
</xsl:template>
 
<xsl:template match="identno">
    <fo:table-cell height="6mm" display-align="before">
        <fo:block text-align="left">
            <xsl:value-of select="mfc"/>
        </fo:block>
         <fo:block text-align="left">
            <xsl:value-of select="pnr"/>
        </fo:block>
     </fo:table-cell>
</xsl:template>
 
<xsl:template match="qty">
    <fo:table-cell height="6mm" display-align="before">
        <fo:block text-align="center">
            <xsl:value-of select="."/>
        </fo:block>
    </fo:table-cell>
</xsl:template>
 
<xsl:template match="supplyli"> 
<fo:table-and-caption id="{(_at_)id}" caption-side="before" width="15cm"
space-before="4mm" space-after="4mm" table-layout="fixed">
    <fo:table-caption space-after="2mm">
    <fo:block text-align="center" font-style="italic">Table <xsl:number
count="table|table-and-caption|norefs|refdms|nospares|sparesli|nosupeq|s
upeqli|nosupply|supplyli|reqpers|noconds|reqconds" from="dmodule"
level="any"/>  Supplies</fo:block>
    </fo:table-caption>
    <fo:table text-transform="uppercase" margin-left="2cm">
    <fo:table-column column-number="1" column-width="6.5cm"/>
    <fo:table-column column-number="2" column-width="5.2cm"/>
    <fo:table-column column-number="3" column-width="3.3cm"/>
    <fo:table-header text-align="left">
    <fo:table-row text-indent="-2cm" space-after="4mm"
border-before-style="solid" border-before-width="0.5pt">
    <fo:table-cell height="6mm"
display-align="center"><fo:block>Nomenclature</fo:block></fo:table-cell>
    <fo:table-cell display-align="center"><fo:block>Identification
No.</fo:block></fo:table-cell>
    <fo:table-cell display-align="center"><fo:block
text-align="center">Qty</fo:block></fo:table-cell>
        </fo:table-row>
            <fo:table-row height="2mm" border-before-style="solid"
border-before-width="0.5pt">
            <fo:table-cell>
            </fo:table-cell>
            <fo:table-cell>
            </fo:table-cell>
            <fo:table-cell>
            </fo:table-cell>
            </fo:table-row>
        </fo:table-header>
        <fo:table-footer>
       <fo:table-row text-indent="-2cm" border-before-style="solid"
border-before-width="0.5pt">
    <fo:table-cell></fo:table-cell>
    <fo:table-cell></fo:table-cell>
    <fo:table-cell></fo:table-cell>
    </fo:table-row>
    </fo:table-footer>
    <fo:table-body>
        <xsl:apply-templates/>
     </fo:table-body>
    </fo:table>
</fo:table-and-caption>
</xsl:template>



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