Autodesk CIVIL3D - CIVILDESIGNCOMP 2007 SLM CD Tutorials Manual page 63

This action specifies that the point cloud style parameters determine the
display properties of the point cloud.
5 Click OK.
The point cloud now shows the major differences in elevation between
the point cloud points. In the following steps, you will view point cloud
points by the classification code that was assigned to them as they were
created.
Display point cloud points by classification
1 In the drawing, select the point cloud.
2 Click Point Cloud tab
drop-down
3 In the Point Cloud Properties dialog box, on the Information tab, under
Point Cloud Style, select LIDAR Point Classification. Click OK.
The point cloud now shows the color-coded point cloud points. This is
a useful way to see different features that were captured during the scan.
In the following steps, you will adjust the point cloud style to filter
unwanted features from the point cloud.
Modify panel
Point Cloud Properties.
Exercise 2: Working with Point Cloud Styles | 51
Point Cloud Properties