+.TP
+.B --freq
+Display the current
+.I frequency
+or
+.I channel
+used by the interface.
+.TP
+.B --mode
+Display the current
+.I mode
+of the interface.
+.TP
+.B --protocol
+Display the
+.I protocol name
+of the interface. This allow to identify all the cards that are
+compatible with each other and accept the same type of
+configuration.
+.br
+This can also be used to
+.I check Wireless Extension support
+on the interface, as this is the only attribute that all drivers
+supporting Wireless Extension are mandated to support.