Routine: Requests (using %RSEL) the name(s) of the routines to change; <RETURN> ends the selection.

Old string: Requests string to be replaced.

New string: Requests replacement string.

Show changed lines <Yes>?:

Asks whether to display the before and after versions of the modified lines on an output device.

Output Device: <terminal>:

Requests a destination device; defaults to the principal device.