Adding @window (#676)

ThomasLandauer · web-flow · commit f7953b6324d6 · 2023-05-29T12:26:09.000+02:00
Info is taken from #675 (comment)
diff --git a/docs/reference/controllers.md b/docs/reference/controllers.md
@@ -232,7 +232,13 @@ class EffectsController extends Controller {
 ```
 
 If the two controllers don't belong to the same HTML element, the `data-action` attribute
-needs to be added to the *receiving* controller's element.
+needs to be added to the *receiving* controller's element. And if the receiving controller's
+element is not a parent (or same) of the emitting controller's element, you need to add
+`@window` to the event:
+
+```html
+<div data-action="clipboard:copy@window->effects#flash">
+```
 
 `dispatch` accepts additional options as the second parameter as follows:
 
