Some graphic parameters require an expression in a specific unit. Each of those parameters contain the Unit Selection Box:
| Unit | Comment |
|---|---|
| METER on scale | Specifies the size expressed in METERs (or whichever unit) in the coordinate system. When zooming in and out, this size will stay in reference with the spatial objects: Zooming in will enlarge the size, zooming out will reduce the size. |
| MM on paper | Specifies the size expressed in Millimeters on paper. Will result in an exact size when printed on paper, and will ALWAYS appear in this size, regardless the zoom factor or display scale. |
| POINT on screen | Specifies the size expressed in POINTs or Pixels on screen. Will result in an exact size in amount of pixels on screen, regardless the zoom factor or display scale. |