Use this dialog box to control the line formatting for a specific range of entities or for a specific value in a theme.
Select a line type to represent the data values or click to go to the Select Linetype dialog box.
Select a layer for the new lines, or click to go to the Layer Properties Manager dialog box.
Specify the width of the polylines in the thematic map.
To assign line width to circles, arcs, or lines, convert the objects to polylines with the drawing cleanup tools. See To Clean Up Drawing Data.