Regarding statistical corrections for multiple comparisons, see the
documentation for program AlphaSim, which is contained in files AlphaSim.ps
and AlphaSim_fig.ps. Also, see the documentation for program 3dFDR, which
is contained in file 3dFDR.ps.
The post hoc tests within program 3dANOVA3 are provided by the -amean, -adiff,
-acontr, -bmean, etc., etc., etc,. options.