+@vindex ack
+@anchor{CfgACK}
+@item ack
+ Options applied to automatically generated @ref{ACK} packets during tossing.
+
+ @table @code
+ @item nice
+ Use that @ref{Niceness, niceness} for generated packets (255 is used
+ otherwise).
+
+ @item minsize
+ If set, then apply @ref{OptMinSize, -minsize} option during file
+ transmission.
+ @end table
+