This abstract class specifies the methods to be implemented by all subclasses
that are intended to provide a sub-window to the main application.
Package org.pfsw.tools.cda.ui.plugin.spi Description
UI Service Provider Interface
This package contains abstract classes which represent extension-points for
UI integration of custom implementations.
A plug-in is simply created by extending one of the abstract extension-point
classes and implementing the required method.
Then just add the full qualified class name to the file ui.plugin in
sub-directory META-INF and bundle it together with all your classes
to a JAR file.
Finally put the JAR file into the 'lib/ext' sub-directory of CDA and