| AbstractCurrentTrailFilter | 
 Ancestor for plugins that filter the current trail. 
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| AbstractCurrentTrailFilterWithGOE | 
 Ancestor for trail filters that process the current trail with a setup
 obtained from a GenericObjectEditorDialog. 
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| AbstractSelectedTrailsFilter | 
 Ancestor for plugins that filter the selected trails. 
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| AbstractSelectedTrailsFilterWithGOE | 
 Ancestor for trail filters that process the selected trails using
 a setup from a GenericObjectEditor. 
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| AbstractSelectedTrailsViewerPlugin | 
 Ancestor for plugins that work on selected trails. 
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| AbstractSelectedTrailsViewerPluginWithGOE | 
 Ancestor of plugins that use the GenericObjectEditor for the setup
 that processes the selected trails. 
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| AbstractTrailViewerPlugin | 
 Ancestor for plugins for the TrailViewer. 
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| AbstractTrailViewerPluginWithGOE | 
 Ancestor for plugins that require a GOE. 
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| Statistics | 
 Displays the statistics about trails. 
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| TrailViewerPluginManager | 
 Manages the plugins of the trail viewer tool. 
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