[zbrush] Transpose line behaving as Action line. Refuses to center on selection.

Denzule

I'm not sure what I did but clicking the white circle at the end of the line no longer centers it on selection but rotates the document camera. I looked through the zbrush docs and it mentions this as a function of the action line (http://docs.pixologic.com/user-guide/3d-modeling/posing-your-model/transpose/action-line/ ) but it doesn't say how to switch it back since it mentions the same white circle under the transpose tool (http://http//docs.pixologic.com/user-guide/3d-modeling/modeling-basics/transpose/#center-transpose ).

Sorry for the noob question, but how do I change the operation of the white circle? It was working before and I don't know what setting I must have changed.