Command vectors are distinct techniques for allowing users to issue instructions to the program. Direct manipulation handles, drop-down and pop-up menus, toolbar controls, and keyboard accelerators are all examples of command vectors.

• 命令途径是使用者对程序发号施令的途径和方法，例子包括直接操作柄、下拉菜单、弹出菜单、工具栏控件，以及键盘加速器。