-default, the way scanning is done (the scope of the scan) will be
-impacted by the current setting of the driver. Also, this command is
-supposed to take extra arguments to control the scanning behaviour,
-but this is currently not implemented.
+default, the way scanning is done (the scope of the scan) is dependant
+on the card and card settings.
+.br
+This command take optional arguments, however most drivers will ignore
+those. The option
+.B essid
+is used to specify a scan on a specific ESSID. The option
+.B last
+do not trigger a scan and read left-over scan results.