How do you "copy" objects?

[Pfredd]

I have seen Factorio gameplay videos where they appear to be able to copy & paste objects, such as an inserter.

They already have one inserter placed. They appear to drag a new inserter from the already placed one then place the new one. They did not have an inserter in their quick bar and they did not open the crafting window to select one.

I apologize if I am using incorrect terms, as I am new to Factorio.

Any pointers to references to tips on how to do this, and other interface shortcuts, would be most welcome.

[Pfredd]

OK, I figured it out...

The Pipette tool (Q key) takes whatever object the pointer is over and puts it into your hand.