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Comment: Migration of unmigrated content due to installation of a new plugin

Excerpt
hiddentrue

controller classes

The controller classes are actions and forms
There are two kinds of controller classes, Actions, found in the action directory, and ActionForms found in the data directory.

Struts Actions provide a glue between the View and Model layers and are responsible for processing specific requests.  Struts Actions should always extend org.apache.struts.action.Action�.
Struts ActionForms should always extend org.apache.struts.action.ActionForm�.

org.apache.struts.action is the core of the struts framework, providing the "Controller" aspect of a MVC model. See the section on MVC.

TBD - talk about how to go to different actions from the jsp using the hidden thingy