take out remote E-SInE -- it's broken and Geoff says it might take quite a while before he gets to it, plus it's fairly obsolete in the meantime
Arith = FOL +
classes arith < term
consts "0" :: "'a::arith" ("0")
"1" :: "'a::arith" ("1")
"+" :: "['a::arith,'a] => 'a" (infixl 60)
end