3D Primitives and Conversions - Autodesk AutoCAD 2013 Practical 3D Drafting and Design - page 126

The creation of these solid primitives, like most commands in the previous chapter,
is dynamic, that is, upon specifying one or more points or dimensions, we see the
objects being formed.
Note
For most basic shapes (with the exception of POLYSOLID), we can use the
PROPERTIES palette ( Ctrl + 1 ) to change dimension parameters after creating
the solid.
To improve the visibility of curved faces in non-wireframe visual styles, we may apply
the FACETRES variable. A value of 2 or 3 is normally enough. With wireframe visual
styles, we may apply the ISOLINES variable to increment the number of lines used
to represent curved faces, or the DISPSILH variable to show a silhouette or pro-
file lines of solids with curved faces. These variables were explained at the end of
Chapter 4 , Creating Solids and Surfaces from 2D .