A modification may be specified for several segments sharing a common attribute. Such a shared modification may be combined with other modifications made to a composition or part of a composition. A modification may be applied to section of digital media, where a first segment of a media composition...http://www.google.se/patents/US6571255?utm_source=gb-gplus-sharePatent US6571255 - Modification of media with common attributes on a digital nonlinear editing system