In general, users can choose their favourite XIM server by setting the system environment XMODIFIERS, like this.
通常，用户可以通过设置系统环境变量XMODIFIERS选择他们想要的XIM服务器，例如。
2
Internally, a common process of every XIM is to translate keyboard scan code into keycode and then to keysym, by calling XKB, whose process detail has been described in previous sections.