Acronis Drive Cleanser 6.0 - User Guide - Manual (Page 25)

You will be taken to the algorithm definition window again. In this window
the 2-nd record looked like this before: 2 – write – 00, and it was replaced
by: 2 – write – previous step complementary value.
The 2-nd pass of the custom algorithm is defined
Following the U.S. data destruction standard specification, define third and
forth data overwriting passes.
In the same way you can create any data destruction algorithm matching
your security requirements.
24 Chapter 2 : Wiping Hard Disks with Acronis DriveCleanser