HPATH-THRESHOLD : FLAGHPATH-THRESHOLD is a flag or parameter.
If NIL, break on major conjunctions. If n, break at
conjunctions and also on disjunctions having more than n hpaths.
HPATH-THRESHOLD takes values of type NULL-OR-POSINTEGER.
It belongs to subjects MS98-MINOR .
Its default value is 1
Its current value is 1.
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