An augmented spreadsheet presentation provides for selecting a region of user focus in a primary body of data displayed as an array of cells, with two or more displayed cells of the array of cells being logically linked by a constraint graph. Two or more displayed cells can be linked by color or symbol...http://www.google.fr/patents/US6256649?utm_source=gb-gplus-shareBrevet US6256649 - Animated spreadsheet for dynamic display of constraint graphs
Animated spreadsheet for dynamic display of constraint graphs