[reustle]

I think he is referring to how on windows you can only screenshot the entire screen. Not sure if that has changed in recent years.

[vetinari]

You can also screenshot the current window (Alt-PrtSc).

Since Vista, there is also snipping tool, which allows the same things as Mac screenshoting.

[vic20forever]

Win-Shift-S to select a rectangular area to capture

[konart]

You can totally screenshot anything anyway you like on windows. The only difference is that windows has separate utility for this instead of a shortkey