How do you duplicate player heads in minecraft on a windows keyboard?

Question

I usually use a MacBook when I play and in order to duplicate a specific player head I would look at it and, while pressing command, press the key I have set to duplicate items. I need to know how to do this on a windows keyboard that doesn't have the command key.

Answer 1

Hold the Ctrl key (instead of cmd) then press the pick block button (mouse wheel click by default) with the player head highlighted.