If there are no objections I'd like to add a += operator to itk::Offset to go with the -= operator it already has. -- Mark Foskey (919) 843-5436 Computer-Aided Diagnosis and Display Lab mark_foskey@unc.edu Department of Radiology, CB 7515, UNC http://www.cs.unc.edu/~foskey Chapel Hill, NC 27599-7515