The join type of the system rails. 
   Namespace:   Autodesk.Revit.DB.Architecture  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
  Since:  2013 
Syntax
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Members
| Member name | Description | 
|---|---|
| ByType | The rails will be joined according to the settings in the rail type. | 
| Miter | The rails will be joined by a miter connection. | 
| Fillet | The rails will be joined by a fillet connection. |