Apple has been granted a new patent for it’s iWork Numbers application. You might want to take a look at it.
It relates to when you want to copy data into a new chart that the new data is associated with the old data into a new data set.
- Apple nabs 16 more patents for multi-touch, solar power, iWork (zdnet.com)
- Apple nabs more patents for multitouch, iWork (news.cnet.com)