afni.nimh.nih.gov

Thanks!

The solution I used in the meantime was far less elegant:

-expr 'a  + (b + 1000*bool(b)) * not(equals(bool(a)+bool(b), 2))'

maybe because I built on my original

-expr 'a  + b + 1000*bool(b))

(which assumed no overlap) and I did not think of streamlining.

By the way, avoiding overlap does not fix the problem with the longnames messing up the label table.