If cl encounters conflicting options , it uses the rightmost option .
如果cl遇到冲突选项，则使用最右边的选项。
The rightmost part of a host name is called its zone , such as following table .
主机名称的最右边部分是区。如下表：
Noble gas ( or inert gas ) : any of the six chemical elements that make up the rightmost group of the periodic table as usually arranged : helium , neon , argon , krypton .
