Welcome to myCobol.net Saturday, 29 April 2017, 09:30 @ CEST
Cobol is mainly used in a business environment where architectures use the IPO principle: Input some data (records in a file), process them and output them (print records). Off course, this is a very simplistic view.
This IPO principle is still found in most modern system architectures and is sometimes synonimized with client-server architecture. Fact is that input forms got smart as http-requests, and printed reports went also intelligent in the form of html-pages. From a Cobol perspective these smart entities are a foreign concept since they are in free format.
The compiler that accepts the syntax, uses a library that handles the CGI protocol. This cgi library can be tuned for your needs by environment variables, as follows:
General Rules (DISPLAY external-form-item)