How to reverse TrimLasso?

#1

I am just learning to use TrimLasso.
As it is described, TrimLasso remove all geometry that is with IN the lasso.
However, in my Zbrush 4R6, it always do the opposite and remove the geometry OUT of the lasso.
How can I reverse it?

Thank you for your help at advance.

#2

Draw the lasso in the opposite direction.

If memory serves, clockwise will remove everything outside the lasso, counter-clockwise will remove everything inside the lasso.

Hope that makes sense?