Documentation for older versions of IBM Enterprise COBOL for z/OS

IBM Enterprise COBOL for z/OS 5.2, 5.1, 4.1, and 3.4 are out of service. Documentation for those versions is provided outside of IBM Documentation.

PDF version

You can find the PDF version documentation in the Enterprise COBOL for z/OS documentation library.

Local information centers for COBOL 4.1 and 3.4

Documentation for COBOL 4.1 and 3.4 can be downloaded and installed on a Windows-based workstation or web server for local viewing:
Steps to set up local information centers

Take the following steps to set up local information centers on your workstation:

  1. Double-click IC_start.bat in ent_COBOL_IC/ibm_help to start the build.
  2. A command window is opened to show the build progress. After the build ends, in your browser, type http://your IP address:1111/help/index.jsp to open the local information center, where 1111 is the default port number.
  3. Optional: You can modify the port number in SETTING_HTTP_PORT in the ent_COBOL_IC/ibm_help/ file, and then rerun IC_start.bat.

    For example, if your IP address is and the port number is 9999, the local information center will be at:

  4. Double-click IC_end.bat in ent_COBOL_IC/ibm_help to exit the build.


For documentation for current releases of Enterprise COBOL for z/OS, see Enterprise COBOL for z/OS Documentation.

For more lifecycle information about Enterprise COBOL for z/OS, see Support Lifecycle.

The COBOL Migration Portal contains all relevant information about Enterprise COBOL compilers migration.

The IBM Publications Center also provides publications for many older versions of IBM products that are not present in IBM Knowledge Center. These files are available for you to view or download. In a number of countries, you can also order publications on the site. The IBM Publications Center offers customized search functions to help you find publications.