Follow-up questions on specialization

["Paul Prescod" <paul.prescod@blastradius.com>]

1. Can anyone describe why "uicontrol" is different 

<!ATTLIST shortcut    %global-atts;  class CDATA "+ topic/keyword
ui-d/shortcut ">
<!ATTLIST uicontrol   %global-atts;  class CDATA "+ topic/ph
ui-d/uicontrol "    >
<!ATTLIST wintitle    %global-atts;  class CDATA "+ topic/keyword
ui-d/wintitle ">

2. In general, is the specialization structure (both details and
rationale) documented anywhere except in the actual DTD? For example,
how would I find out from the spec that task/postreq is a kind of
topic/section?

----
 Paul Prescod
 Group Program Manager
 Blast Radius XMetaL