Element: projection.local_origin
Element: projection.local_originpoint
A point in original projection space defining a local 2-D transformation origin shift. When this point is non-zero all points are assumed to be relative to this point.
The coordinates are assumed to be in the current modeling units, but will be adjusted automatically on a subsequent change of modeling units.
All local point rotations (projection.local_angle) and scaling (projection.local_scale) are computed relative to this point.