I'm attaching a slightly modified version of the changeset that PHK 
submitted on 2004-07-02.  This changeset was filed-out form a traits 
image and contains a uses: {} argument that prevents it from filing 
in to a non-traits image.  I have removed this, and added a preamble. 
I have made no other changes.

I have noticed what appears to be a duplication of mechanism in the 
way that the appropriate inspector is selected.

(1) object>>inspect creates and inspector of a class given by the 
method inspectorClass

		self inspectorClass openOn: self withEvalPane: true

(2) However, Dictionary>>inspect and 5 other classes (CompositeEvent, 
ExternalStructure, FloatArray, OrderedCollection and now Set) 
override that method and specify the class of their inspector 
explicitly, as in

	Dictionary>>inspect
		"Open a DictionaryInspector on the receiver.  Use 
basicInspect to get a normal (less useful) type of inspector."

		DictionaryInspector openOn: self withEvalPane: true

(3) However, this doesn't always work.  This is because of the 
following amazing piece of code in
         Inspector>>inspect: anObject
	"Initialize the receiver so that it is inspecting anObject. There is no
	current selection."

	| c |
	c := anObject inspectorClass.
	(self class ~= c and: [self class format = c format]) ifTrue: [
		self primitiveChangeClassTo: c basicNew].
	self initialize.
	object := anObject.
	selectionIndex _ 0.
	contents := ''

Thus, the OrderedCollection inspector that is initially created to 
inspect an OrderedCollection has its class forcibly changed to be 
Inspector, because there is no #inspectorClass method in 
OrderedCollection.

I feel that I should clear away all this redundancy, and rely on the 
#inspectorClass mechanism and Object>>inspect.  But before I do so, I 
wondered why it was here, and what secret I'm missing.  The 
primitiveChangeClassTo: code was added quite recently, by ajh on 
2003-2-3, with the comment (on the Swiki, but not in the code) that 
"An inspector will change to the appropriate class when being updated 
with a new receiver."  When does this happen?

	Andrew