IBM® extensions generally add features, syntax, or rules that are not specified in the ANSI and ISO COBOL standards that are listed in Industry specifications. In this document, the term 85 COBOL Standard refers to those standards.
Extensions range from minor relaxation of rules to major capabilities, such as XML support, Unicode support, object-oriented COBOL for Java™ interoperability, and DBCS character handling.
The rest of this document describes the complete language without identifying extensions. You will need to review IBM extensions and the Compiler options in the Enterprise COBOL Programming Guide if you want to use only standard language elements.