Showing note names in Key Editor ?

I’ve been watching ASK Video’s tutorials recently and I noticed in one of them that they had the Key Editor setup so that the note names were shown on each note (see attachment). But they didn’t mention how to do it and I can’t see anything in the manual.

So, how’s it done ?
cubase.jpg

Just make sure that the vertical zoom is sufficient.

Aha !! Thanks a lot.