Copy Rotation Constraint

The Copy Rotation constraint forces its owner to match the rotation of its target.

Options

Target
Data ID used to select the constraints target, and is not functional (red state) when it has none.
X, Y, Z

These buttons control which axes are constrained.

Invert
The Invert buttons invert their respective rotation values.
Offset
When enabled, this control allows the owner to be rotated (using its current transform properties), relative to its target's orientation.
Space
Standard conversion between spaces.