To see what tau knows about a function symbol
This macro returns a list structure that indicates what facts about the
The list structure should be self-explanatory given the following brief
comments. The ``index'' of a function, when non-
The ``positive'' and ``negative implicants'' are conjunctions that indicate the tau implied by the given one or its negation.
The ``signatures'' entry is a formula indicating all the known signatures.
If the signatures formula is
If you wish to see a long list of all the runes from which some tau
information has been gleaned, evaluate