The Construction and Calculation Commands can be started from the COGO panel on the Modify tab.
Intersection.
Arc Intersection.
Orthogonal Calculation.
Polar Calculation.
Orthogonal Projection.
Snap/Trim.
Split.
Add Vertex.
Remove Vertex.
Insert Point.
Extract Point. See also
Offset.
Right Angle Course.
Free Standpoint.
Center.
Join LInes.