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\DOC meson_brand
\TYPE {meson_brand : bool ref}
\SYNOPSIS
Makes {MESON} handle equations using Brand's transformation.
\DESCRIBE
This is one of several parameters determining the behavior of {MESON},
{MESON_TAC} and related rules and tactics. When {meson_brand} is {true},
equations are handled inside {MESON} by applying Brand's transformation. When
it is {false}, as it is by default, equations are handled in a more ``naive''
way, which nevertheless appears generally better.
\FAILURE
Not applicable.
\USES
For users requiring fine control over the algorithms used in {MESON}'s
first-order proof search.
\COMMENTS
For more details of Brand's modification, see his paper ``Proving theorems with
the modification method'', SIAM Journal on Computing volume 4, 1975.
See also Moser and Steinbach's Munich technical report ``STE-modification
revisited'' (AR-97-03, 1997) for another look at the subject.
\SEEALSO
meson_chatty, meson_dcutin, meson_depth, meson_prefine, meson_skew,
meson_split_limit,
\ENDDOC
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