Use the portable output format.
.TP
.BI "\-o " FILE ", \-\-output=" FILE
-Do not send the results to \fIstderr\fP, but overwrite the specified file.
+Do not send the results to
+.IR stderr ,
+but overwrite the specified file.
.TP
.B "\-a, \-\-append"
(Used together with \-o.) Do not overwrite but append.