modifying void_prefix in zobov.py

[tsfraser]

Is there a specific line where i can reliably modify "void_prefix" in zobov.py?

I'm currently working on a branch of revolver that allows you to alter the filenames with command line arguments, and I'm trying to add the "handle" to the void catalogue naming system. I've gotten it to work so far with voxelvoids.py (and can provide the source code for it), but I was wondering which line in zobov should be changed (if it even is a single line)? Since I've modified several parts but to no avail.