Maya Keymap lacks some basic shotcuts

Hi,

I couldn’t find some basic shortcuts in Maya keymap. For example where are viewport shader’s shortcuts?

In blender default, these shortcuts are Z, Alt Z and Shift Z. In maya keymap, they aren’t there. Do you know why? Is this a bug or something like that?

Thank you.

OK, my bad. I’ve just found them. This one is a Maya keymap so they are 4,5 and 6.