An information processing apparatus include a priority information assigning unit configured to assign priority information indicating priority between a first area and a second area of a recording medium in an overlapping area of the areas to at least one of gloss-control plane data and clear plane data. A header is inserted including one or more fields of information for a multicast distribution tree into the multicast packet in which the fields of information include a root level node field indicating a root node of the multicast distribution tree and one or more second level fields indicating one or more child nodes of the root node of the multicast distribution tree. Swivel mechanism is mounted to the other mounting bracket leg, and extends into the drum and is adapted to be non-rotatably connected to a conduit and to a hose that is to be wound onto and unwound from the reel drum. A drive stopping portion is configured to stop the rotation of the rotation drive portion, when the first movable portion reaches the first cutting position. Upon recovery from a system failure, the error detection value for the transaction is redetermined; if it does not match the value as has been stored to the storage, then the transaction is aborted. A disclosed example photomask comprises: a first pattern located along an axis of the photomask; at least one second pattern located a distance from and a predetermined angle to the first pattern; and slits made of Cr on at least one end of each of the first and second patterns, wherein the photomask is a Cr-less mask.