32. A system according to claim 30 , further comprising means to lock at least one segment object within said displayed editable information to prevent editing by said editing means.
32. A system according to claim 30 , further comprising means to lock at least one segment object within said displayed editable information to prevent editing by said editing means. 33. A system according to claim 32 , wherein said display means comprises means for marking the at least one locked segment in said displayed editable information.