You can edit macros after they have been defined. To edit a macro, do the following:
From the Tools pull-down menu, select Macros, Edit Macros.
Using the mouse or arrow keys, select the macro that you want to edit, and click OK. The macro is displayed on the line editor.
Edit the macro expansion and then press [Enter] to register the changes. Press [Esc] to exit from the line editor without registering any changes.