Some elements like XHTML or DOCBOOK root elements have
relatively complex content model. In this case create valid
content or find missing child element can be difficult.
Because completion list is long and user cannot recognize
mandatory elements from optional.
Let these are considered while planning next release.
Target milestone was changed from not determined to TBD
Feature positively influences user
It requres all grammars to provide this info.
Unscheduling from my todo list. New owner is gladly welcome. Meanwhile assigning
to abstract firstname.lastname@example.org owner.