1. Define and mark Surface elevation at any random point on Surface (TIN). Draw appropriate character points (optional) Triangulated Irregular Network (TIN) may be produced by Atoll Surface Creator or by any other program, producing TIN as 3DFACE objects. 2. Paste linear objects onto Surface (TIN) 3D splines presenting plane lines or polylines, are produced. 3. Draw Surface Elevation Sections according to selected lines or polylines. Any quantity of numbered Sections with the one command. 4. Draw Surface Elevation Profiles according to selected curves. (3D splines, pasted onto the Surface) Any quantity of numbered Profiles with the one command. Illustrated HTML Help included. This program is also the part of Atoll Land Surface application. Platform: expected to work properly with any AutoCAD or IntelliCAD version. Fill free to download the program demo and to test it with your CAD platform