wonder if the recently announced decision to enable Notes/Domino development in the cloud may partially solve this issue
Provide a real PDF engine for Lotus Domino applications. (15 Jun 2009)
hooking up the iText open source PDF library classes to DXL works great for me.
Create a hotspot via LotusScript (05 Jun 2009)
there's an option HotSpotText$ parameter in the appenddoclink method that does just that...
Call notesRichTextItem.AppendDocLink( linkTo, comment$ [, HotSpotText$ ] )