a screen dump of the TREE schematic for a simple technical trading system.
The topmost schematic is labeled to indicate how it corresponds to the
discussion of Section 3. The lower schematics illustrate the use of
hierarchy in TREE: they are composite blocks that can be reused in other
contexts. The red lines do not appear in the original screen shot, but
were added to point out the relation between the schematics.
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Copyright 1997, Structured Software Systems, Inc.