\Title{Unicode: U₄(ℤ[1/√2, i]). ASCII: !"'()*+,-./:;<=>?@[]`|#$&~^_. Four escaped symbols: \% \backslash\ \{ \}. } \Author{Gödel\sep Escher\sep Bach\sep U₄(ℤ[1/√2, i]), !"'()*+,-./:;<=>?@[]`|#$&~^_, \% \backslash\ \{ \}} \Subject{This is the abstract. It's about ℤ[1/√2, i] and other rings.} \Keywords{the group U₄\sep and other stuff\sep Some symbols: & # < > \copyright\ 2014} \Copyright{Copyright \copyright\ 2014 The artist known as Ƭ̵̬} \CopyrightURL{http://www.mathstat.dal.ca/~selinger/copyright.html}