Property alteration types.
| 00 | kAlterationBlockName | Block name. |
| 01 | kAlterationColor | Color. |
| 02 | kAlterationLayer | Layer name. |
| 03 | kAlterationRotation | Rotation. |
| 04 | kAlterationElevation | Z coordinate in the user coordinate system. |
| 05 | kAlterationHeight | Text height. |
| 06 | kAlterationLineType | Line type. |
| 07 | kAlterationScale | Scaling factor. For example "1.2" = 120% |
| 08 | kAlterationStyle | Text style. |
| 09 | kAlterationText | Text value. |
| 10 | kAlterationThickness | Thickness. |
| 11 | kAlterationWidth | Line width. |
| 12 | kAlterationTextEntity | Text entity definition. |
| 13 | kAlterationHatch | Hatch definition. |