What is ids in imagemap example?

[Trimble, Beheen]

Hey People,

 

I am still trying to make the mouseover works in my application!

 

Do you know what is %ids% in below map?  Where this is defined?

 

Thanks

Beheen

 

 

 

MAP
  NAME "TEST"
  SIZE 380 450
  EXTENT  180000 4816000 773000 5474000
  UNITS METERS
 
  IMAGECOLOR 252 252 252
 
  SHAPEPATH "/r01/data/drs"
 
  FONTSET "/usr/local/mapserver/fonts/fonts.list"
 
  WEB
    HEADER "templates/imagemap_header_example.html"
    FOOTER "templates/imagemap_footer_example.html"
    IMAGEPATH "/usr/local/www/docs_maps/tmp/"
    IMAGEURL "/tmp/"
  END
 
  QUERYMAP
    STATUS ON
    STYLE NORMAL
  END
 
  LAYER
    NAME county
    STATUS OFF
    DATA "data/bdry_counpy2_gen500"
    TYPE POLYGON
    # LABELITEM "CTY_ABBR"
    CLASS
      EXPRESSION ('[COUN]' in '%ids%')
      STYLE 
        COLOR "#BD9E5D" # "#A27528" 
        OUTLINECOLOR 50 50 50 
      END
    END
    CLASS
      COLOR 255 255 255
      OUTLINECOLOR 50 50 50 
    END    
    TEMPLATE "templates/county_example.html"
  END # counties
END

 

 

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