afni.nimh.nih.gov

I understand that afni_proc censors the data using 3dTproject. The default mode seems to be KILL (is it?), which removes time points from dataset. However, I read this post from Bob Cox (https://neurostars.org/t/despiking-vs-scrubbing/2157/10) in which he wrote that adding a regression matrix column with zeros and ones (ZERO mode) and deleting the row (KILL mode) are equivalent. Or am I misunderstanding his post?

Best regards,
Sam