Creates the URLLAYER layer, draws a polyline on that layer, and attaches a URL to
the polyline.

The polyline that represents the area is displayed in the color assigned to URLLAYER.
The default color is red. When you move the cursor over the area in the drawing, the
cursor changes to a hyperlink cursor to indicate that a URL is attached to the area.

Attaches a URL to the selected object.

When you move the cursor over the object in the drawing, the cursor changes to a hyperlink
cursor to indicate that a URL is attached to the object.