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Creating an Application
This section describes the high-level process of developing an EngageOne™ Enrichment application.
Developing an Application
Working with User-Written Functions
Call Areas in User-Written Functions

Introduction
EngageOne™ Enrichment processes and manipulates print streams and data to support advanced printing and distribution strategies.
Creating an Application
This section describes the high-level process of developing an EngageOne™ Enrichment application.
Running an Application
Details how to run EngageOne™ Enrichment applications on supported platforms, performance tuning and other run-time considerations.
Troubleshooting
Debugging and application troubleshooting information.
Language Reference
Functions, Print Stream commands, System Variables, Tags, Translation Tables and Messages.
Message Reference
Listing of all possible error messages issued by EngageOne Enrichment.
Notices

Call Areas in User-Written Functions

EngageOne™ Enrichment communicates with the user-written function through data buffers called “call areas”. Programmers do not have to be concerned with these. However, the programmer who writes the user-written function does need to understand the call areas.

When EngageOne™ Enrichment executes the function it passes it two memory buffers called the “input call area” and the “output call area”. EngageOne™ Enrichment formats these call areas with specific data to ensure validity and appends them with a data area for the input argument (input area) and return string (output area).

Note: The COBOL code in Example COBOL User-Written Function illustrates these areas and defines their content.