Description of data-class

I had a to-do from the last meeting to document the @data-class attribute - here's my attempt:  XDITA: @class
HDITA: @data-class (on keydef, linktext, note elements)
stores only the element name value of the full @class syntax
only needed on elements that do not have an existing HTML equivalent
examples:  <div data-class="keydef"> <span data-class="linktext"> <div data-class="note">  MDITA: HDITA representation
Would this do the trick?
Michael