Hi Lauren,
There are postings on the message board that discuss environment variables in general (see [
afni.nimh.nih.gov] ).
Note that options -max_areas and -max_search_radius DO NOT need the environment variables mentioned there. They will override whatever defaults are set by these environment variables.
If you want to set defaults via environment variables you can to your .afnirc file (located in your home directory) something like the following:
AFNI_TTATLAS_CAUTION = NO
AFNI_WHEREAMI_MAX_FIND = 12
AFNI_WHEREAMI_NO_WARN
etc.
cheers,
-ziad