Statistics on pystyler.py
-------------------------

Solo verified by Shipman using trace tables: see pystyler.vrf for
the trace tables themselves.

Program size: 89/344 code lines, 26% non-blank non-comment lines.

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Syntax errors
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S1  
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Bugs that would be caught in a more strongly-typed language
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T1  Subroutine navSubtree was misspelled as navSubTree at its
    point of call.
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T2  In navVariants(), this line:
        for  var in topic.linkVarList():
    should be:
        for  var in topic.linkVarList:
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T3  In navSubTree(), this line:
        for  childx in range(topic.nChildren):
    should be:
        for  childx in range(topic.nChildren()):
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Logic bugs
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B1  In navSubTree(), the recursive call should call navSubTree()
    and not just navTopic().
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B2  In navTopic(), we must add one to each element of the
    result of topic.fullPath() to move from origin-0 to origin-1
    numbering.
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