Hi Danny,
That should be the default now, after getting both
FWHM and ACF from 3dFWHMx. You can select
what you want using -regress_run_clustsim METHOD,
where METHOD should be one of:
ACF, FWHM, both, no.
This requires afni_proc.py version 5.xx, something
dated at least August 15.
- rick