Provided is a print control apparatus for controlling a printing apparatus that is able to perform color printing by using coloring agents of a plurality of colors. The gate dielectric layer is disposed on a substrate. Additionally, the gas-fortified liquid can be utilized to remove residual resist scum, and in such aspects the gas-fortified liquid can emit bubbles during the scum removal. Dirty data is destaged from the cache when it reaches the tail of the first least recently used list and clean data is purged from the cache when it reaches the tail of the second least recently used list. Still another method concerns distribution of content items, where each is watermarked with a unique ID as part of the distribution process. The interface is useful with different calculators having different display formats.