| Name | ID | Description | Type | 
|---|---|---|---|
| Location | L | Location on Earth | Location | 
| Time | T | Time and date for solar incidence computation | Time | 
| Orientation | P | Local plane (X=East, Y=North) | Plane | 
| Name | ID | Description | Type | 
|---|---|---|---|
| Direction | D | Solar incidence vector | Vector | 
| Elevation | E | Angle between horizon and solar vector | Number | 
| Horizon | H | True if sun is above the horizon | Boolean | 
| Colour | C | Colour suggestion | Colour | 
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