| Name | Value | Description |
| eUDT_None | 0 | |
| eUDT_Double | 1 | |
| eUDT_PositiveDouble | 2 | |
| eUDT_PositiveZeroDouble | 3 | |
| eUDT_NegativeDouble | 4 | |
| eUDT_NegativeZeroDouble | 5 | |
| eUDT_Int | 6 | |
| eUDT_PositiveInt | 7 | |
| eUDT_PositiveZeroInt | 8 | |
| eUDT_NegativeInt | 9 | |
| eUDT_NegativeZeroInt | 10 | |
| eUDT_Boolean | 11 | |
| eUDT_String | 12 | |
| eUDT_Percentage | 13 | |
| eUDT_BoundaryCurve | 14 | |
| eUDT_StockCurve | 15 | |
| eUDT_SideWallCurve | 16 | |
| eUDT_Curve1 | 17 | |
| eUDT_Curve2 | 18 | |
| eUDT_Curve3 | 19 | |
| eUDT_Curve4 | 20 | |
| eUDT_Curve5 | 21 | |
| eUDT_Surface | 22 | |
| eUDT_CheckSurface | 23 | |
| eUDT_DropList | 24 | |
| eUDT_StaticString | 25 | |
| eUDT_PickPoint | 26 | |
| eUDT_PickX | 27 | |
| eUDT_PickY | 28 | |
| eUDT_PickZ | 29 | |
| eUDT_Solid | 30 | |
| eUDT_VersionDouble | 31 |