About Layers in AutoCAD Civil 3D
Each object in AutoCAD Civil 3D has a base layer on which the object physically resides, and component layers that control the display of object components, such as surface triangles or contours.
About Object Editing Tools
Object editing in AutoCAD Civil 3D uses an approach that is consistent for all objects. The main editing tools are described here.
About Isolating and Hiding Objects AutoCAD Civil 3D provides easy-to-use features for temporarily isolating or hiding selected objects in your drawing.