"Hold Position" Ping?

So I was looking through the patch notes and saw this: in the bug fixes:

https://i.imgur.com/Ok79686.png

What in tarnation is the "Hold Position" Ping? Is that a funny name for a ping we already have or is it coming new orrr? I feel really dumb right now

I went into Practice Tool and looked at my keybinds and it wasn't listed with any of the pings either, can someone explain?