Methods and apparatus for an efficient multicast file distribution system. A coated veneer sheet of sliced wood is prepared by bonding a reinforcing member onto the coated veneer by an adhesive. The tokens notify a source when a transmission fails. An air outlet is defined between two neighboring guiding plates for the airflow flowing out the space into the passage. The blends are particularly useful for barrier packaging. When using input-output characteristics where an output value logarithmically increases with a linear increase in input value, internal functional blocks are controlled to invalidate image correction functions which influence the tone characteristics or contrast of an image.