Edit an Existing Plot Macro
- From the Math panel, select a macro from the list.
 - 
                Click Edit.
                The Edit Plot Macro dialog is displayed.
 - Click the Parameters tab.
 - Add parameter names or edit existing names in the Parameters text box.
 - Select parameter types from the Type combo box.
 - Add or edit parameter variable names in the Varname text box.
 - Click the Curve tab.
 - Select a parameter.
 - Edit the X and Y coordinates.
 - Click Close.
 - Edit the macro name in the Macro text box.
 - If desired, rename the macro by highlighting the name from the list, entering a new name in the Macro field, and pressing Enter.