Guideline 11 : Allow configuration and customization
Checkpoint 11.3 : Allow override of bindings
Allow the user to override any binding that is part of the user agent default input configuration.
Normative inclusions and exclusions
The user agent is not required to allow the user to override conventional bindings for the operating environment (e.g., for access to help).
The override requirement only applies to bindings for the same input modality (e.g., the user must be able to override a keyboard binding with another keyboard binding).
This checkpoint excludes the requirements of checkpoint 11.4.