С18, пардон. для ХС8 иначе: 7.2.25 -Wnum
The -Woption can be used to set the warning level, in the range -9 to 9, or the width of
the map file, for values of num>= 10.
-W9will suppress all warning messages. -W0is the default. Setting the warning level
to -9 (-W-9) will give the most comprehensive warning messages.