17. The computer system of claim 12 , wherein the hyperlink displayed on the user interface for the element in the form calculation includes the hyperlink displayed using color coding and formatting to distinguish the hyperlink from other parts of the form calculation that do not have a hyperlink.
12. A computer system for editing a form calculation, the system comprising: a processor; a memory unit that stores instructions associated with an application executed by the processor; and an interconnect coupling the processor and the memory unit; enabling the computer system to execute the application and perform operations of: displaying a user interface for displaying information to a user and for accepting input from the user; displaying a hyperlink on the user interface for an element in the form calculation, the form calculation being a spreadsheet and the form calculation including a mathematical formula, displaying the hyperlink to indicate to the user that a control is available for the element, the hyperlink including at least one hyperlink target, the hyperlink target identified by a link to a choice satisfying the element on the form calculation, the hyperlink providing one of the group consisting of (i) a link from the form calculation to another location, wherein the another location is identified by a reference to valid variables in the hyperlink target and (ii) a link from the form calculation to another file, wherein the another file is identified by a reference to a selection of choices in the hyperlink target; upon a selection of the hyperlink by the user, displaying the control on the user interface for user interaction, the control including a list of choices satisfying the element in the form calculation; receiving a selection from the list of choices through the user interface: and upon completion of user interaction with the control, and in response to receiving the selection, replacing the element with a new element corresponding to the selection, displaying the hyperlink for the new element in the form calculation, and causing the control to disappear from view.