BooleanFunction CeilingFunction ConcatFunction ContainsFunction CountFunction FalseFunction FloorFunction IdFunction LangFunction LastFunction LocalNameFunction NameFunction NamespaceUriFunction NormalizeSpaceFunction NotFunction NumberFunction PositionFunction RoundFunction StartsWithFunction StringFunction StringLengthFunction SubstringAfterFunction SubstringBeforeFunction SubstringFunction SumFunction TranslateFunction TrueFunction