A little more info...
This seems to go back a few years - maybe there's
a better/more recent version? Comes with rc.confirm
and a _modified_ rc.custom. Evaluate with caution.

ftp://www.pure.ch/pub/smartlist/confirm-1.2.tar.gz

 My system tried to save this file with a .tar ext.
and I had to rename to .gz in order to get it to
extract.

Here's one of many FAQ lists...
http://www.hartzler.net/smartlist/SmartList-FAQ.html

Hope this helps.

Scott