Reference Direction
Plane normal to Line, through End
This command creates a plane centered on the closest end point of the selected line. It is also oriented such that the normal of the plane matches the axis direction of the line. This is true at either selected end of the line.
Line normal to Object
This command asks for a selection of objects and builds a normal to the Z axis of each object's base frame (a planes normal direction or a cylinders axis direction. All objects (plane, line, cylinder, etc) have a normal direction. The line created will represent that normal direction.
Line normal to Object, through Point
Creates a line parallel to the selected object’s normal with its origin originating at the selected point.
Plane along Objects direction, centered at Point
Creates a plane created normal to a selected object with its origin centered on the selected point.
Circle along Objects direction, centered at Point
This command creates a circle using the selected object’s normal and is centered at the selected point.