The DTM Color Ramp frame deals with elevation and the color gradients to represent different elevations. If the user is only using a 2D polygon then this section is irrelevant. Figure 1 shows this section for reference.
Figure 1 DTM color ramp sub-sections.
Give the color ramp a name
Single Ramp or Upper Range
Specifies the range of color from blue to red
Specifies the lower range of the color ramp
Show Color Topo
Shows the elevation topography in color based on the color ramp.
Auto Ramp to Viewport
Change Min, Max, and Average number of View Options "Ortho", "Dx", and "Dy" on Legend when view window changed.
Elevation Clipping Options
Specifies the elevation range for clipping
DTM Point Options
Allow the user set the diameter of DTM Points in inches