07/08/06 dwc - Description stands alone; rout of Structure
07/04/06 dwc - expand the tree, to better show generality and power
08/21/04 dwc - polish again to limit the part names
08/05/04 dwc - polished to better explain compositional modeling
08/04/04 dwc - created to illustrate patterns of associations

=============== Begin actual PSI-trees; blanks skipped; comments are above 

1. Whole-Part = *A*: a primitive association type in CTM builds
11. Whole = 1: subtypes of this and W-P can declare every Part
12. Part = N: its role players can be checked, imagined, related

2. Collection = *T*: an abstract W-P: the enumerated set
21. Set-Member = Members (Parts) of a Set have no order
22. Map-Member = Nor do Map Members, but they do get an identifier
23. List-Member = Members of a List do have some order imposed

3. Substance = *T: physical W-P models fractional composition, not sets  
31. Compound-Part = parts denote proportions of other merged Substances
32. Element-Isotope = Even with such stuff, the whole is not uniform
33. Mixture-Part = a mixture is similar, but its parts stay distinct

4. Aggregation = *T: the social world has many mixtures in it; E.g: 
41. Team-Member = a Group of sentients: a family, tribe, organization
42. Group-Faction = has distinct, similarly oriented member clusters 

5. Structure = *T: its discrete parts obey situational constraints
51. Molecule-Part = Substance properties arise from chemical bonds
52. Object-Piece = Pieces are smaller Objects, tightly constrained
53. Organism-Piece = Pieces of living things are called body parts

6. Situation = *T; varied abstract, temporal, causal, functional parts
61. Relation-topic = prepositional phrases resemble scoped triples
62. Verb-complement = modeling states and changes takes case frames

7. Description = *T; its W-P model is disjoint from that of its referent
71. Equation-Part = parts are terms, operators, a described, an author
72. Picture-Part = parts are its elements, artist, medium, subject, etc.
73. Paragraph-Part = parts are author, topics, theme, style, clauses, etc