The rules for the 6th version of Wounded keep it together read

6. When you are confronted by the horrendous, supernatural, or mind-shattering, roll+Steady. On a 10+ you take -1 the next time you keep it together. On a 7-9 you gain a break or wound a move. On a 6-you black out, the GM will describe what unfortunate circumstances you wake up in.

Ah, that was left over from an earlier draft and may return in a later one. The idea is that there would be specific conditions that could be gained from the move. For now you can safely ignore that part.