Specifies a user-defined filter that selects all the parts that need to be shown dotted and undimensioned on the isometric drawing.
Click the Browse 
button to display the Select Filter dialog box, and then select the appropriate filter.
Defines:
Option Switch - N/A
I-Configure - S3D.Drawing.Format.DottedSymbology.DottedUnDimensionedFilter
For this option to be active, ensure that Dotted UnDimensioned Label is not set.