Redsdk

Available in TurboCAD Pro and Platinum only
The Redsdk settings allow you to control how object appear when using the Redsdk for draft rendering and hidden line rendering.

Use background color: When it is turned off (On by default), the option for editing internal color of objects will become available (by default the color is white).
Width by graphic: When this option is on the Width of the visible part of graphic's line is taken from the graphic itself. When it is turned off, the field for editing the width of the visible part of object lines will become available (by default the width is = 0).
Color by graphic: When this option is on the color of the non-hidden part of an object's lines is taken from the graphic itself. When the option is off the option for editing the color of the non-hidden part of an object's lines will become available (by default the color is white).
Width by graphic: When on the Width of the hidden part of an object's line is taken from the graphic itself. When it is turned off, the field for editing the width of the hidden part of object lines will become available (by default the width is = 0).
It should be noted that the width of hidden lines must be less than or equal to the width of visible lines.
Backward Line Settings
Color: This option defines the color of hidden lines (by default it is grey; R=G=B=128)
Transparency: This option defines the transparency of hidden lines, with the range of 0 to 1 (by default it is 0.1)
Stipple: This option defines the type of dashed line used for hidden lines, with the range of 0 to 255 (by default it is 255)
Draft Mode Settings
Ambient: This field defines the light intensity factor for all light sources of Ambient type (by default it is 10).
Diffuse: This field defines the luminance factor (by default it is 75).
Specular: This field defines the glare factor (by default it is 50).
Exponent: This field defines the glare attenuation parameter (by default it is 10).
Soften: This field defines glare 'softness' (by default it is 0).