The edit command invokes $EDITOR on a source file. It is valid only in native mode.
The edit command uses $EDITOR if dbx is not running in the Sun Studio IDE. Otherwise, it sends a message to the IDE to display the appropriate file.
Edit the current file.
Edit the specified file file_name.
Edit the file containing function or procedure procedure.
where:
file_name if the name of a file.
procedure is the name of a function or procedure.