https://api.dart.dev/stable/2.13.3/dart-html/KeyCode/OPEN_SQUARE_BRACKET-constant.html
OPEN_SQUARE_BRACKET constant - KeyCode class - dart:html library - Dart API
API docs for the OPEN_SQUARE_BRACKET constant from the KeyCode class, for the Dart programming language.
open square bracketconstantkeycodeclassdart