 
			
abs(minus(numbers("per") if exp(numbers('yxr'), numbers("per")) > numbers("xxx") if exp(numbers('yxr'), numbers("per")) > numbers('yxr') else numbers("per") else numbers('yxr'), numbers("per") if exp(numbers('yxr'), numbers("per")) > numbers("xxx") else numbers('yxr')))
Some images will appear differently when resized as some of the functions which generate images are sensitive to the scale. We're working to improve this.