Constants for looking up value type names
Constants are provided to map from data value type names, as used in requirements.schema files, to typecode values, as returned by O.typecode().
O.NAME_TO_TYPECODE
The O.NAME_TO_TYPECODE constant maps value type names to typecode values.
O.TYPECODE_TO_NAME
The O.TYPECODE_TO_NAME constant maps from a typecode value to a value type name.