Prism provides an interface to the editor of your choice. You can use this editor to edit source code (or anything else).
To call the editor from within Prism:
You can specify which editor Prism is to call by using the Customize utility to set a Prism resource; see " Using the Customize Utility". If this resource has no setting, Prism uses the setting of your EDITOR environment variable. Otherwise, Prism uses a default editor, as listed in the Customize window.
The editor is invoked on the current file, as displayed in the source window. If possible, the editor is also positioned at the current execution point, as seen in the source window; this depends on the editor.
If you issue the edit command from the command window, you can specify a file name or a function name, and the editor will be invoked on the specified file or function.
After the editor has been created, it runs independently. This means that changes you make in the current file are not reflected in the source window. To update the source window, you must recompile and reload the program. You can do this using the Make selection from the Utilities menu, as described below.