1. A computer-readable medium excluding all signals having stored thereon a data structure, comprising: data cells comprising data that are stored in a first location in a spreadsheet or document; data sets stored externally in a second location other than in the spreadsheet or document and that is different from the spreadsheet or document, wherein at least one of the data sets stored in the second location is related to at least one of the data cells stored in the first location in the spreadsheet or document but are not the same values displayed in a different format; and a user interface instantiated in response to a user selection to format the data of the at least one data cell in the first location, wherein the user interface displays one or more options of data sets, including displaying at least one option of the data sets that is stored in the second location other than the spreadsheet or document and that is related to the at least one data cells cell in the first location such that a user selection of one of the data sets results in the at least one data cells cell in the first location in the spreadsheet or document being formatted using-based on values from the selected data set from other than the spreadsheet or document without changing a value of the at least one data cell in the first location.