Leftward-pointing arrows in PbtA will be things like:
I charge the Orc, sword in hand => Make the Hack & Slash move, but first
As you charge, you have no cover against the archers who are all around you => Make the Defy Danger move
Arrows pincushion your mail, slowing you down and testing your fortitude <= The Defy Danger result is 6 or less
______________________________________________________________________________=> Take -1 going forward
_______________________________________________________________________________{The Hack & Slash result is 10+
The Orc falls down dead!_____________________________________________________<=The damage roll exceeds the Orc's hp as listed by the GM
(Sorry if the formatting is a bit wonky, but hopefully my arrows make sense, including that one cube-to-cube near the end, from damage roll to hp total which then triggers the leftward arrow back to the fiction. One thing about PbtA is that there is not a lot of cube-to-cube, but there is a bit: in DW there are hp; in AW there is the harm move and its relationship to the harm clock.)