For example
begin hierarchy people;
person;
/ engineer;
// i:Bob;
/ salesperson;
// i:John;
end hierarchy people;

Previously, this required two begin/end groups
hierarchy begin/end for engineer, salesperson
and unithierarchy begin/end for Bob,John

Dick McCullough
knowledge := man do identify od existent done;
knowledge haspart proposition list;
http://mKRmKE.org/