var F_L = 0;
var F = 1;
var F_R = 2;
var B_L = 3;
var B = 4;
var B_R = 5;

var UP_R = 0;
var UP_L = 1;
var UP_L_R = 2;
var NA = -1;


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var trails = new Array(new Route('Beacon Hill', 'beaconhill', array0,'',0,0,1),new Route('Boylston', 'boylston', array1,'',0,0,1),new Route('Boston Commons', 'commons', array2,'',0,0,1),new Route('Freedom Trail 1', 'freedomtrail1', array3,'',0,0,1),new Route('Freedom Trail 2', 'freedomtrail2', array4,'',0,0,1),new Route('Freedom Trail 3', 'freedomtrail3', array5,'',25,1,2),new Route('Harvard Square', 'harvard', array6,'',0,0,1),new Route('Newbury', 'newbury', array7,'',49,1,2));