How do I figure out what biome i'm in?

[Catfather12]

in Direwolf20's let's play series, he will occasionally push a key on his computer bringing up a display that includes his position, a pie chart with cpu usage? and other information including the biome he's in.

How does he do that? I can't find the key in the control config menu. Is it specific to a mod?

 

[tedyhere]

F3

 

[noah_wolfe]

F3.

 

[tedyhere]

I is ninja!

 

[omegarte]

^ what these guys said.

 

[SerTrollface]

F3. It's the vanilla debug screen. Also, it's preferrable that, if you have Optifine, you turn Lagometer off in the options.