The information in this article applies to:
All of my line styles appear to look the same, as solid, instead of dashed, lines. They appear indistinguishable from each other. Why?
Line weight scaling affects both line weights and line styles, and can be particularly noticeable with dashed line styles.
The default line weight scale of 1=1/100mm makes it easy to meet many professional drawing standards. In most cases, this scale will produce positive results using any printer or plotter and should not be changed.
Checking the option for Use 1 for all line weights is not normally recommended. The reason to check this is to have the program specify the line weight scale, and adjust it, to maintain line thickness and dash size when the drawing scale is changed.
This feature was added for better interoperability between the Chief Architect professional program and the Home Designer software.