ned in the extension point org.eclipse.ui.viewActions and implements
IViewActionDelegate. The View it appears in is defined by the tag targetID
which in this example is org.eclipse.ui.views.ResourceNavigator. The editor
action is defined by the class EditorActionDelegate which implements IEditorActionDelegate
and is added using the org.eclipse.ui.editorActions extension point. The
editor that it is applied to is defined by the tag targetID which in this
example is defined on org.eclipse.ui.examples.readmeto