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Instructions provided describe how to symbolize polygon outlines with either a cased line (a line with fill color and a different outline color), or a dashed/dotted line in ArcGIS 9.
When symbolizing polygon outlines, problems arise when choosing cased line or dashed/dotted line symbology. This is because when polygons are drawn, the shared edge between two polygons is drawn twice. The effect when choosing cased outlines is that lines do not intersect well. The effect when choosing dashed or dotted lines is irregular and overlapping dash or dot patterns.
The 'Polygon to Line' Geoprocessing tool (under Data Management Tools / Features) prepares the polygon outlines for symbolizing with cased or dashed/dotted lines.
In ArcGIS 8.3 and later versions, you can also use topology to prepare polygon outlines for symbolizing with cased or dashed/dotted lines. See the Related Information section below to learn more about this method.
The output line feature class will have two attribute fields: LeftID and RightID, populated with the Object ID of the source polygons. Though the tool does not provide an option to transfer any additional original polygon attributes, you can use the right and left ID fields to have access to additional attributes through joins or relates.