One of the general options for using Hero Points is
Spend all your Hero Points (minimum 1) to avoid death. You can do this when your dying condition would increase. You lose the dying condition entirely and stabilize with 0 Hit Points. You don't gain the wounded condition or increase its value from losing the dying condition in this way, but if you already had that condition, you don't lose it or decrease its value.
My first reading of this was that you can only do it when your Dying condition would increase to stop Dying. Recent events (decapitation effects) have caused me to reread it and realize that it might be more generalized than I previously thought.
Is there any guidance to support if it's supposed to prevent any effect that would kill you with the "when your dying condition would increase" being an exception/allowance vs. "when your dying condition would increase" being it's only trigger?