Click here to see the SAS code.
Click here to see the example.

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Data from:
traillink.com

As in several previous examples, this one has a gradient background
(created using annotated strips of color), and a shadow-effect 
around the edge of the map (created using an annotated polygon,
that was created using the outermost border of the map, after
gremoving the interior borders).

The markers are located by specifying the zipcode of the city, 
and then looking up the long/lat in sashelp.zipcode.  
The markers try to imitate the look of a rollerblade wheel.
It is a large black pie, overlaid by a smaller gray pie,
overlaid by a tiny black pie, and then a gray circle (empty
pie) around the outside edge.  There are drilldowns for each
of these annotated markers, allowing you to easily drilldown
to the webpage for that skate trail.

At the bottom corners, there are annotated images, which 
have links back to the main webpage for all the trails.
The title also has a link to this topmost trails page.

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