What are the similarities and differences between the LDS and RLDS D&C?

The Community of Christ (formerly RLDS) , has more sections to their Doctrine and Covenants –**163 sections**. This is 25 more than what's in the LDS Doctrine and Covenants . I notice also that many of the scriptures from sections written by Joseph Smith have been omitted by the Community of Christ. Without creating a long list answer, can someone explain what's in the RLDS D&C that isn't in the LDS D&C? And what the RLDS have removed or changed from the D&C that Joseph Smith wrote?