DOCBOOK-APPS: fo xsl:param doco error

<xsl:param name="callout.unicode.start.character" select="10102"
           doc:type='integer'/>

<doc:param name="callout.unicode.start.character" xmlns="">
<refpurpose>Number of the largest callout graphic</refpurpose>

Should be (I hope)
<refpurpose>First Unicode character to use, decimal value.</refpurpose>

I.e. U+278A

Regards, DaveP