Autodesk AUTOCAD 2006, Command Reference Manual, Page: 1083 / 1490

Defines the polar axis of the spherical coordinate system and the wrap line
for the bitmap projection.
Adjust Bitmap
Displays the Adjust Object Bitmap Placement Dialog Box for adjusting the
bitmap’s offset and scaling.
Offsets and Rotations
Changes the X and Y offsets of the map. You can change the rotation by
entering a new value or by using the scroll bar.
Parallel Axis
Specifies one of the three perpendicular axes of the WCS or an axis you
specify by choosing Pick Points. If you select Picked Axis and then choose
OK without choosing Pick Points, the Z axis of the WCS is used by default.
NOTE If you use Pick Points, but the points you select correspond to one of the
WCS axes, this axis is saved as the WCS axis. The next time you display the
Adjust Spherical Coordinates dialog box, the option indicates the WCS Z, Y, or
X axis (or plane) instead of Picked Axis (Picked Plane).
Pick Points
Temporarily closes the Adjust Spherical Coordinates dialog box so that you
can specify a projection sphere in the drawing area. Select three points: the
center of the mapping sphere, the radius of the sphere in the direction of
the sphere’s north pole, and the direction toward the seam (wrap line).
Adjust Spherical Coordinates Dialog Box | 1059