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The present Course B1 shows in Appendix the diagram of central 
domain of the Pathways Model.
This diagram is meant to support a fundamental discussion of the state
of the art of Computer Models of Reality which will follow with Course B2. 
This diagram is shown by anticipation in order to allow the participants 
to get well acquainted with diagramming devices, to clarify eventual 
doubts through questions and thus to be prepared for the following deep 
discussion.

Here I want to draw readers' attention to the preponderance of yellow
boxes, i.e. to the overwhelming importance of Relational Entities for
pertinent models.

After a few days destined to iron out eventual doubts I shall post 
the Course B2.
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APPENDIX
Biochemical Pathways Example.
   
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