showUserStructure -- show relationship between types defined by user
Description
showUserStructure -- a command which displays the structure of types defined by the user and assigned to global variables.
Each such class is displayed to the right of its parent.
A type is an instance of the class Type.
i1 : X = new Type of List
o1 = X
o1 : Type
i2 : Y = new Type of X
o2 = Y
o2 : Type
i3 : Z = new Type of X
o3 = Z
o3 : Type
i4 : showUserStructure
o4 = Thing : BasicList : VisibleList : List : X : Y
Z