Update article.md

Author: joaquinelio

2-ui/3-event-details/7-keyboard-events/article.md

@@ -107,7 +107,7 @@ So, `event.code` may match a wrong character for unexpected layout. Same letters
 
 To reliably track layout-dependent characters, `event.key` may be a better way.
 
-On the other hand, `event.code` has the benefit of staying always the same, bound to the physical key location. So hotkeys that rely on it work well even in case of a language switch.
+On the other hand, `event.code` has the benefit of staying always the same, bound to the physical key location. So hotkeys that rely on it work well even in case of a language switch. For example, games that use `key:A` `key:D` for an avatar traveling.
 
 Do we want to handle layout-dependant keys? Then `event.key` is the way to go.