| 1914 |  | utilities consistent with other tools in Radiance. | 
| 1915 |  |  | 
| 1916 |  | Added triangulation routine to handle convex polygons in obj2mesh. | 
| 1917 | + |  | 
| 1918 | + | ****** COMPATIBILITY CHANGE ******** | 
| 1919 | + | Made backface visibility apply to all material types, including | 
| 1920 | + | transparent and translucent materials (except dielectric and interface). | 
| 1921 | + | This makes the option useful in cases where adjacent trans surfaces | 
| 1922 | + | are placed next to each other by a modeler that only understands | 
| 1923 | + | volumetric objects. | 
| 1924 | + |  | 
| 1925 | + | Changed dctimestep so that output matrices (-n > 1) are preceded by a | 
| 1926 | + | header, and added support for float and double output formats with -o[fd]. | 
| 1927 | + |  | 
| 1928 | + | Introduced eplus_adduvf program to compute user view factors for EnergyPlus. |