Did you know that the Acu/extend product comes with sample COBOL programs, data and other files to help you learn about the product?
Beginning with version 10.0, these are located in:
On Windows (replace the n.n with product subversion):
C:\Users\Public\Documents\Micro Focus\extend 10.n.n\sample
On Unix/Linux platforms:
The sample folder is just below the selected product install location
You can find more information at this page in the product documentation.