/DIALOG
       /NODIALOG (D)

    Instructs LSE to use a dialog box to prompt you for parameters
    and qualifier values. If you specify this qualifier, the command
    parameters are optional. If you supply command parameters and
    qualifiers with the /DIALOG qualifier, LSE uses those parameters
    and qualifiers to set the initial state of the dialog box.

    The Substitute dialog box has the same fields as the Search dialog
    box, plus a button for case-matching replacement and a text field
    for the replacement string.