If we were developing several tags or defining tags with tag variables, we would have multipletag handler classes.
如果我们开发的是几个标记或者定义有标记变量的标记，那么我们就会有多个标记处理程序类。
2
If multiple library definitions for the same tag library are in your workspace, the tools will ignore all except the one with the highest version number.
如果在您的工作区内对相同的标签库有多个库定义，那么工具会忽略所有的版本号，除了最高版本的版本号。
3
Each tag has multiple attributes that control the behavior of the Viewer.