 So you don't understand the Modeler modifier. Not a problem. The Z-Modeler modifier is not a function like the others. It affects how the other tools behave. So for example, when you're on something like Qmesh and you have targets set to Flat Island, meaning any face that is facing the same direction as the one you click, the default flatness is 15 degrees, meaning that any face that is bent no more than 15 degrees from the one you click will be included on your action. But if you wanted to change it to something like 30 degrees. That just means that now, the next time you click on a Flat Island, everything that is less than 30 degrees different from the face you clicked will be included. Repeat Last Tolerance is the required amount of movement to repeat an action on a tablet. And Pause Repeat is related to the feature where ZBrush remembers the value of your last action. Let's say you're on inset. And this is the perfect border for most of your work. So now when you tap left click it will keep the borders exactly the same each time. But for whatever reason you need to change the size. The problem is after you change the size, if you click now it's using the new size instead of the old size. Well when you pause repeat that tells ZBrush, hey I don't want you to remember the changes I make to the values when I left click. So that when you turn it back on it continues from the value before you pause. Hope that helps and as always hope you have a fantastic day and I'll see you around.