The description of the lexical spaces of unsignedLong, unsignedInt, unsignedShort, and unsignedByte has been revised to agree with the schema for schemas by allowing for the possibility of a leading sign. test unsignedLong The possibility of a leading sign is allowed for unsignedInt. The possibility of a leading sign is allowed for unsignedInt. The possibility of a leading sign is allowed for unsignedByte. test unsignedLong invalid instance The possibility of a leading sign is allowed for unsignedInt. The possibility of a leading sign is allowed for unsignedShort. The possibility of a leading sign is allowed for unsignedByte.