An updated version of CORELAP, named INTERACTIVE CORELAP, has been introduced recently to overcome these limitations. It allows the user to make fine adjustments at intermediate stage of the layout development. The layout generated by this version doesn't have rectangular configurations that eliminate poor space utilization exist in previous version. Evaluation is based on score which is the shortest rectilinear distance between the borders of all pairs of departments multiplied by the numerical values of the closeness rating between the departments. It gives more realistic layouts since the layout user is a part of the decision making process
and operational difficulties can be taken care of to some extent due to possibility of intervention at the intermediate stage.