Guideline A.3.1: (For the authoring tool user interface) Provide keyboard access to authoring features. [Implementing A.3.1] Rationale: Some authors with limited mobility or visual disabilities do not use a mouse and instead require keyboard interface access to all of the functionality of the authoring tool. A.3.1.1 Keyboard Access (Minimum): All functionality of the authoring tool is operable through a keyboard interface without requiring specific timings for individual keystrokes, except where the underlying function requires input that depends on the path of the user's movement and not just the endpoints. (Level A) Note 1: Keyboard interfaces are programmatic services provided by many platforms that allow operation in a device independent manner. This success criterion does not imply the presence of a hardware keyboard. Note 2: The path exception relates to the underlying function, not the input technique. For example, if using handwriting to enter text, the input technique (handwriting) requires path-dependent input, but the underlying function (text input) does not. The path exception encompasses other input variables that are continuously sampled from pointing devices, including pressure, speed, and angle. Note 3: This success criterion does not forbid and should not discourage other input methods (e.g. mouse, touch) in addition to keyboard operation. Implementing A.3.1.1 A.3.1.2 No Keyboard Traps: If keyboard focus can be moved to a component using a keyboard interface, then focus can be moved away from that component using only a keyboard interface. If it requires more than unmodified arrow or tab keys or other standard exit methods, authors are advised of the method for moving focus away. (Level A) Implementing A.3.1.2 A.3.1.3 Efficient Keyboard Access: The authoring tool user interface includes mechanisms to make keyboard access more efficient than sequential keyboard access. (Level AA) Implementing A.3.1.3 A.3.1.4 Keyboard Access (Enhanced): All functionality of the authoring tool is operable through a keyboard interface without requiring specific timings for individual keystrokes. (Level AAA) Implementing A.3.1.4 A.3.1.5 Customize Keyboard Access: If the authoring tool includes keyboard commands, then those keyboard commands can be customized. (Level AAA) Implementing A.3.1.5 A.3.1.6 Present Keyboard Commands: If the authoring tool includes keyboard commands, then the authoring tool provides a way for authors to determine the keyboard commands associated with authoring tool user interface components. (Level AAA) Implementing A.3.1.6