An action that needs the handle it is taken from — because it takes an edge
itself — with the same "only on top" check action applies, taken from
the one place that owns it. action hands its body only the state; an action
that continues into another screen after its request needs the handle to take
that edge from.
It belongs to the screen framework rather than to a platform: a second
platform whose screen action takes its own edge uses this one, never a copy.
An action that needs the handle it is taken from — because it takes an edge itself — with the same "only on top" check action applies, taken from the one place that owns it.
actionhands its body only the state; an action that continues into another screen after its request needs the handle to take that edge from.It belongs to the screen framework rather than to a platform: a second platform whose screen action takes its own edge uses this one, never a copy.