Toggle selection

Another mystery to solve. Toggle selection (hotkey Shift+MMB) deselects the selected elements. But doesn`t select them again. Where`s the toggle?

Toggle selection (hotkey Shift+MMB)

I do not see any default hotkey set to "Shift+MMB"
There is the default hotkey "Toggle selection" = "Shift", which is used to toggle the add/remove from selection, when using LMB or MMB.
When using shift+MMB for selection, it does either add or remove from selection, although it is a pain at times due to the fact if you click on the same selection too quickly, it will invert selection (for selection type) in the same mesh.

I have to admit I am not found of the selection methods in NVIL, for me they are over complicated and limited. Although I have seen others saying how great they are.

I see, that was one of the tools that i had to customize a bit because of my special mouse setup. Yes, it`s the default hotkey "Toggle selection" = "Shift" that i mean. And thanks for the explanation. Now it makes sense. I didn`t realized that this kind of toggle was meant. And yes, it`s a bit of a pain