graphical hotspots in DITA documents

Is anyone on the DITA TC aware of any discussion about how
to use existing DTIA markup or how to create a domain specialization to handle
graphical hotspots?

 

Graphical hotspots come up most often in relationship to CGM
graphics where there are named graphics objects and you want to be able to link
“from a hotspot” (graphic to text) or link “to a
hotspot” (text to graphic). The linking should be done in the context of
the document that includes the graphic rather than from or to the graphic
itself.

 

In some ways “from hotspotting” is similar to an
imagemap where the coordinates in the imagemap are replaced by the hotspot
name. I am wondering about using a <shape> of “name” and
placing the name itself as content of the coords element.

 

I can’t think of any existing DITA markup that is
similar to the “to hotspotting” where you want to link to a
document to activate a named hotspot in the graphic, but I could imagine
adapting a element structure similar to imagemap to do this even if the image
map would be being used in the opposite direction from its traditional use.

 

You don’t need to dig into this any further unless you
want to since all I am after is a pointer to any documents, a person, or a
group that might have ideas about  this in the context of DITA, but there
is a  discussion of Hotspots in the context of XML, but not in the context
of DITA, in the S1000D document Chapter 3.9.5.2.1.8:  http://www.s1000d.org/reader.cfm?sector=issues&page=reader&issue=3.0&default=DMC-AE-A-03-09-0000-00A-001A-A_005-00

  

   -Jeff