Random note in case anyone else runs into this. I was monkeying around with this call before and couldn't find the knockdown effect. Couldn't find it for the life of me.
Figured there must be another file with a list and it looks like the best file for effects is StatusData.rb. In there I found it was KNOCKED_DOWN. The other effect strings are a lot more intuitive but this is one of only 3 with an underscore.
The file suggested earlier in the thread ValueList.xslm doesn't have the most accurate information.
