1. A method for self-replicating ranges of cells in a spreadsheet, the method comprising: a central processor displaying a self-replication manager command within a graphical user interface spreadsheet editing menu to a user; the central processor displaying a self-replication manager menu within the graphical user interface to the user in response to the user invoking the self-replication manager command, wherein the self-replication manager menu comprises: a listing of unique set names that are each assigned to one each of a plurality of different sets of ranges of cells of a spreadsheet, wherein each of the sets comprises at least one of the ranges, and each of the ranges comprise a plurality of different cells of the spreadsheet; and a listing of at least one range of the plurality of the ranges that is assigned to one of the sets of ranges that is selected by a user input; and the central processor automatically entering an update entered by a user into one of the cells of the ranges of the selected set into all of the cells of all the ranges assigned to the selected set.