The CERN Imagemap Format

• NOTE: The CERN format does not allow ovals to be specified in its “.map” files.  Therefore, when you are editing a GIF with WebMap, and you have CERN specified as the default format, all ovals will be constrained to true circles.

  Keyword   Coordinates   URL  
 
  rect        (x,y) (x,y)     your_url_here

  circle      (x,y) radius    your_url_here

  poly        (x,y) … (x,y)   your_url_here

Rectangles are specified by their left, top, right and bottom coordinates.

Circles are specified by a center point and a radius.

Polygons are specified by a list of vertices.