Inclined plane through 3 points
You can use this function to create an inclined plane by selecting three points in Graphics.
Usually, you would use this function when you want to create an arbitrary inclined plane using location and approximate orientation, instead of a set of coordinates. You can also use this function to create an inclined plane that is near the set of coordinates, and then use INCLINED PLANES PROPERTIES to change the coordinates to the specific values that define the plane you want to create.
To run this function: Choose Planes > Inclined > Plane through 3 points, or...
Output
A dynamic pane is created, based on the coordinates of the points you selected.