Sequential: Yes Database: berlintest Restore: No Operator : tminit Number : 1 Signature: {string, text} -> bool Example : query tminit('../Algebras/tmspecs') Result : FALSE Operator : tmgetOpSig Number : 2 Signature: {string, text} x string -> text Example : query tmgetOpSig("StandardAlgebra","+") Result : (text '()') Operator : tmtypemap Number : 3 Signature: text x any x any ... -> text Example : query tmtypemap(tmgetOpSig('StandardAlgebra',"+"),3,4) Result : (text 'typeerror')