http://www.gentoo.org/proj/ja/base/amd64/technotes/index.xml?part=1&chap=4
ʂ̃TCgɃWv悤ƂĂ܂BXΏL̃NNbNĂ
UPLIFTōLȂő̌܂傤IKȉ{Ct܂I