| Checkbox "Show u-line" | Display just one of the surface's parameter lines in u-direction. |
| Checkbox "Show v-line" | Display just one of the surface's parameter lines in v-direction. |
| Slider "uMin" | Defines the minimum value for parameter "u" |
| Slider "vMin" | Defines the minimum value for parameter "v" |
| Slider "uMax" | Defines the maximum value for parameter "u" |
| Slider "vMax" | Defines the maximum value for parameter "v" |
| Slider "Number of u-Lines" | Discretization for parameter "u" |
| Slider "Number of v-Lines" | Discretization for parameter "v" |
| Button "Reset" | Set the domain's range and discretization values to their default values. |