cd.attlist.OMS |= 
  attribute cd {string "poly" },
  attribute name {
    string "power" |
    string "factored" |
    string "squarefreed" |
    string "partially_factored" |
    string "expand" |
    string "degree" |
    string "degree_wrt" |
    string "leading_coefficient" |
    string "coefficient" |
    string "factor" |
    string "squarefree" |
    string "gcd" |
    string "lcm" |
    string "discriminant" |
    string "resultant" |
    string "convert" }