Simple value definition are primitive typed values that do not have any dependencies on generated classes. Values of type BOOLEAN, INTEGER, NULL, OBJECT IDENTIFIER, character string, or binary string fall into this category. Global assignments are generated for these types. An example would be as follows:

id_sha256 = [2, 16, 840, 1, 101, 3, 4, 2, 1]
id_sha384 = [2, 16, 840, 1, 101, 3, 4, 2, 2]
id_sha512 = [2, 16, 840, 1, 101, 3, 4, 2, 3]
pkcs_1 = [1, 2, 840, 113549, 1, 1]
    

These are OBJECT IDENTIFIER values from the PKCS-1 ASN.1 module. In this case, the values do not depend on any generated or built-in class definition, they are simply lists of integers.