About mouse nodes Help plz~

I am learning the nodes of mouse.
The book tells me to use Mouse(System Global)node,but when I double clicked I only saw Mouse(Devices desktop) and Mouse(Devices Window).I cant find the Mouse(System Global)node.
Could anyone tells me why please?
Thank you.

yes, there was a bit of a name change:
Mouse (System Global) -> Mouse (Devices Desktop)
Mouse (System Window) -> Mouse (Devices Window)

so if they tell you to use “global”, you now use “desktop”.