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The following page has been changed by MichaelJouravlev:
http://wiki.apache.org/struts/StrutsWebIslands

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  As an example, consider a wizard shown below. Its pages correspond to one 
action and have the same web address. There is no way to go back or forward to 
another wizard page using browser Back or Forward buttons, because pages are 
not addressed individually. This approach protects a user and the application 
from resubmitting data from the stale page, and makes user interface more 
reliable.
  
- inline:aaa
+ inline:web_island.gif
  
  The concept of a web island changes traditional navigation paradigm a little. 
Back and Forward buttons are used to navigate between web islands, while 
navigation within a web island is completely controlled by a corresponding web 
component. A web island can be bookmarked as a whole, but not a particular page 
of it.
  

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