-<input name="Radius" type="double" special="vtk parameter" description="Cone Radius"/>
-<input name="Resolution" type="int" special="vtk parameter" description="Cone Resolution"/>
-<input name="CenterX" type="double" description="Center X coord"/>
-<input name="CenterY" type="double" description="Center Y coord"/>
-<input name="CenterZ" type="double" description="Center Z coord"/>
-<input name="DirectionX" type="double" description="X Direction"/>
-<input name="DirectionY" type="double" description="Y Direction"/>
-<input name="DirectionZ" type="double" description="Z Direction"/>
+<input name="Radius" type="double" special="vtk parameter" description="Cone Radius (default 1)"/>
+<input name="Height" type="double" special="vtk parameter" description="Cone height (default 1)"/>
+<input name="Resolution" type="int" special="vtk parameter" description="Cone Resolution (default 10)"/>
+<input name="CenterX" type="double" description="Center X coord (default 0)"/>
+<input name="CenterY" type="double" description="Center Y coord (default 0)"/>
+<input name="CenterZ" type="double" description="Center Z coord (default 0)"/>
+<input name="DirectionX" type="double" description="X Direction (default 0)"/>
+<input name="DirectionY" type="double" description="Y Direction (default 0)"/>
+<input name="DirectionZ" type="double" description="Z Direction (default 1)"/>