Summary descriptions for top level and for each function category

[SeeSpotRun]

Would it be difficult to add the ability to create summary descriptions? These would add some context/introduction rather than just the bare function descriptions. Something like:

<ExcelDNADoc(Description:="These functions extend the functionality of some of the built-in Excel functions.  See wiki.example.com for usage example")>
<ExcelCategory(Category:="ExStats", Description:="Extended Statistical Functions, use at own risk")>
<ExcelCategory(Category:="ExText", Description:="Extended Text Functions")>

[Cronan]

I believe this has been fixed in the ExcelFunctionDocAttribute, and can be closed. @govert