# Edit Definition/Redefine

Navigation: Menus > Edit Menu > # Edit Definition/Redefine |

Show/Hide Hidden Text

This Edit menu command allows you to edit the definition of a selected calculation, function, or numeric parameter.

This command also allows you to redefine a Hide/Show button or a Presentation button.

| Edit a Definition

Select: | For this command:
One calculation | Edit Calculation
One function | Edit Function
One parameter | Edit Parameter
You can double-click a calculation or function with the Arrow tool as a shortcut for Edit Definition. When you edit the definition of a parameter, the Calculator appears. You can either enter a new value, or you can enter an expression and change the parameter into a calculation.

| Redefine an Action Button

(Mac V5.1 only) Sometimes when authoring complicated sketches you may wish that an existing Hide/Show button hid or showed a different set of objects. Similarly, you may wish that a Presentation button presented a different set of actions. Redefining the set of objects affected by a button can help when revising complicated sketches. To revise the set of objects affected by such a button, select the new set of objects you want the button to affect; then select (last) the button itself. Finally, choose Edit | Redefine Action Button (which replaces "Edit Definition" for this selection). (When redefining a presentation button, ensure your selected objects include only presentable action buttons, followed by the presentation button to redefine.) (Note that only Show/Hide and Presentation buttons can be redefined, and that you cannot redefine a button to depend on objects that in turn depend on that button.)