Release 10.1A: OpenEdge Development:
Progress 4GL Handbook

Defining Functions and
Building Super Procedures

This chapter covers some other important topics concerning how you construct procedures. Specifically, it describes how to define functions of your own within your 4GL procedures to complement the built-in Progress functions you’ve been introduced to. It also details how to build super procedures, which provide standard libraries of application behavior. Finally, it describes the PUBLISH and SUBSCRIBE keywords that help procedures communicate with each other.

This chapter includes the following sections:

User-defined functions
Defining a function
Using super procedures in your application
PUBLISH and SUBSCRIBE statements