Date: Dec 11, 2012 12:56 AM
Author: Halitsky
Subject: 1) yes - I am using abs(t); 2) subtraction from 1

Yes, I am using absolute t - learned the hard way.  Sorry I wasn't
clear about it..

Yes, I did learn experimentally to NOT subtract from 1, as you can see
from the files I sent.

But thanks for explaining the rationale for subtracting/not
subtracting.  Last time you told me what to do, but not as explicitly
- or else I was too stupid to pay close enough attention.