Box/ lasso select - add, toggle & subtract keymap entries

[Hologram]

The final step for customising my hotkeys is to setup the modifier keys (ctrl, shift and alt) for selection the way it is used in 3ds Max. I want ctrl to add to selection, shift to toggle and alt to deselect, however, I haven’t been able to locate the commands responsible for this. Does anyone know where I can find these entries in the keymap?

Here is what it does currently, which is not the way I want it to be (screencast keys included):

[Hologram]

Found it: the settings are a little obscured in the keymap. The commands are view3d.select_box and view3d.select_lasso. Although the settings show up as tweak, the modifier keys can be configured within the settings of the tool.