Section views for architectural design - Clipping depth and adding 3D section views | Autodesk

Create alignments in Civil 3D | Autodesk

Controlling feature lines in Civil 3D - Create feature lines from alignments | Autodesk

Civil 3D Quick Start Guide - Define and manage point groups | Autodesk

Civil 3D Quick Start Guide - Control feature line placement and interactions | Autodesk

Civil 3D Quick Start Guide - About the Civil 3D Toolspace | Autodesk