= ApplicationDefinition = 

The Fusion ApplicationDefinition is an XML document that controls what ends up in your application.  The document should start with an xml block:

{{{
<?xml version="1.0" encoding="UTF-8"?>
}}}

The main tag that contains everything else is the  ApplicationDefinition tag:

{{{
<ApplicationDefinition 
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
        xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
        xsi:noNamespaceSchemaLocation="ApplicationDefinition-1.0.0.xsd">
    <Title>My Application</Title>
    <MapGroup />
    <WidgetSet />
    <Extension />
</ApplicationDefinition>
}}}

The main tag contains the following sub-tags:

'''[wiki:ApplicationDefinition/Title Title]''':
  Occurs once.  Used to set the title of the web page when the application is run.

'''[wiki:ApplicationDefinition/MapGroup MapGroup]''':
  Occurs at least once.  Defines maps to be used in the application.

'''[wiki:ApplicationDefinition/WidgetSet WidgetSet]''':
  Occurs at least once.  Defines a Map and associated widgets to be created.

'''[wiki:ApplicationDefinition/Extension Extension]''':
  Occurs once.  Contains extra parameters that are not part of the defined schema of the ApplicationDefinition.