Twenty-five years ago, Art Spiegelman's "Maus" was published, opening a window into the depth and seriousness that comics as a form could tell. A chronicle of World War II in which the Jews are mice and the Nazis are cats, Spiegelman and his father, a Holocaust survivor, both figure in the text. After the conclusion, "Maus II," came out five years later, Spiegelman was awarded a special Pulitzer Prize.But that was not the end of "Maus," which has been repackaged as a box set and as a single book. Now ... is "MetaMaus," a stunning hardcover book from Spiegelman about the making of "Maus," which includes a multimedia DVD. LAT.