Formatting bug in TDG

http://docbook.org/tdg51/en/html/docbook.html

The blurbs after subscript and superscript are supposed to contain
subscripts and superscripts, but they don't in the TOC. I'm guessing
that the code that builds the TOC just calls xsl:value-of on the
refpurpose instead of applying templates to inline content.

--
Shaun