Echo Attributes
Attributes 
Echo...
Use the Echo Attributes Form to set default attributes for the preview echo displayed during commands like Extrude, Sweep, Sphere, Ellipsoid, Loft and Copy (3D). This is not the complete list. Refer to the Notes section below for command specific considerations.
Set the echo attributes as desired. Pick Accept to keep the current attributes and close the form, Reset to return all attributes to their previous values, or Cancel to close the form without changes.
This form can produce a wide range of echo effects. Experimentation is advised.
Face Font Color - The front face color of echoed shapes.
Face Transparency - How transparent the echo is. Move the slider to the right for more transparency.
Wire Color - The color of wireframe edges and isolines.
Wire Width - The width of wireframe edges and isolines.
Display Echo Edges - Check to display echo edges.
Iso-lines Off/On/Auto - Sets the state of isolines on echoed faces.
Number - Sets the number of isolines per face.
Display Shaded Gauss - Display dynamic gaussian curvature plot on echoed faces. This is similar to the Analyze Faces command.
Display Wire Gauss - Same as Shaded Gauss above but for echoed edges and isolines.
Accuracy/Speed - Use the slider to set the accuracy and speed of the echo.
The Accuracy/Speed setting will determine the maximum number of copies that will echo during the Copy (3D) command. If you move the slider to high speed/low accuracy, the number copies echoed is unlimited. If medium speed/medium accuracy is selected, the maximum number of copies echoed is 30. If low speed/high accuracy is selected, the maximum number of copies echoed is 3.
