| Interface Summary | 
| ApplicationPanel | GUI of an application, which can host plugin manager. | 
| PlugIn | A specialization of the CosyComponentinterface that declares
 additional functionality for installing this component into the manager and
 container. | 
| PlugInListener | A listener interface for receiving notifications from PlugInManagerregarding the changes in the state
 or containment of its plugins. | 
| PlugInManager | Interface defining an object capable of managing simple plugins. | 
| VisiblePlugIn | VisiblePlugIninterface extendsPlugIninterface
 with access to plug-ins GUI container. |