Using jsp tags in struts

I was trying to understand the usage of jsp tags in struts.
Here are the rules for attribute usage for instance consider the following <jsp:useBean id="mybean" class="com.xxx.yyy.mybeanclass" property="myproperty"
scope="request" > :
1. id is used to define a bean
2. name is used to refer to an existing bean (the value is either the value of an id attribute in a previous tag, or is found in application, session, request, or page scope)
3. property is used to select a property from a bean
4. scope tells which scope to search for the bean. If scope is not specified then the bean is searched for in page, request, session and application order)