The complete set of mouse actions (that can be accomplished without using meta-keys) is summarized in the following list.
不借助元键的条件下，能完成的所有鼠标动作总结如下。
2
Use cursor hinting to show the meanings of meta-keys.
用光标暗示表明元键的含义。
3
Apple has had a history of well-articulated standards for use of meta-keys in combination with a mouse, and there tends to be a fair amount of consistency in their usage.