The configuration of Web.xml of struts

There are two parameters in the web.xml, like: "debug" and "detail", code is as follows:

debug
2


detail
2

Are these two parameters only work in the struts 1.1?
Here is one link about this: http://www.yesky.com/197/1794197.shtml

Different versions of Hibernate

Hibernate has version 2 and version 3. There are some differences between them, so We must pay attention to these differencs when we are programming.