Orient To Zpoint-Xpoint

Dialog boxes where you can set orientation dependencies            Shared Dialog Box
Orients an entity in a plane defined by the entity's location and two other Coordinate References, with one of the axes directed along a specified vector in the plane. The directed axis will point in the direction defined from the entity's location to Coordinate Reference 1.
 
For the option:
Do the following:
Coordinate Reference #(1,2)
Enter the name of each Coordinate Reference to be used in determining the orientation plane and direction vector.
Axes
You can select either the z- or x-axis as the directed axis. Regardless of your selection, the XZ (ZX) plane will always be oriented in the plane defined by the entity and the two coordinate references. If you select:
ZX - The z-axis will be parallel to the vector defined from the entity to Coordinate Reference 1.
XZ - The x-axis will be parallel to the vector defined from the entity to Coordinate Reference 1.