Toodles Cthulu Multi-Console PCB Smash Mode


So I was looking on Focus Attack for a new PCB and found this:

In the description, it says it supports Smash Bros with a special mode. I can’t find any information on this mode, though. Any one know what exactly “Smash mode” is? What does it do the the controls that is so different from normal controls?

EDIT: Nevermind, I found a more appropriate place to ask this question.