Re: alphabetic set of xsl:result-document

You probably don't need both the key (the xslt1 way of grouping) and
for-each-group.

after
<xsl:for-each-group select="//div[@type='psalm']//w" group-by="lower-case(.)">
select="key('word', lower-case(.)"
is probably the same thing as
select="current-group()"

so you are probably making saxon index everything twice.

If I understand you correctly you just need to insert an extra layer of
grouping, just grouping on the first letter:

<xsl:for-each-group select="//div[@type='psalm']//w"
group-by="lower-case(substring(.,1,1)">
<xsl:result-file....

<xsl:for-each-group select="current-group()" group-by="lower-case(.)">
     <xsl:sort select="lower-case(.)" />

...

David

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