I am working on a drawing with very large polygons with hundreds of verticies. When one of these polygons are selected, either purposely or by accident, it takes a considerable amount of time for the selection process to run its course. I have tried to turn off properties but that didn't help. Ultimately it would be ideal if you could escape out of this selection process if you decided you did not want to wait. Unfortunately the escape key works only after the selection process ends and the verticies are visible. AutoCAD is locked up until the selection process ends. Is there another way to cancel or escape while AutoCAD is processing a selection such as this?