In cases where it may be appropriate to use a combination of input methods (such as the common Web site or desktop application that relies on both mouse and keyboard input), decide upon the primary input method for the product.

• 在需要两种或以上不同输入方式的组合（如大多数电脑应用和网站访问都需要键盘和鼠标两种输入方法）时，则重点考虑该产品的主要输入方法。