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The API samples in the directories WPIPE1, WPIPE2, WPIPE3 demonstrate:

- How to register external functions from within external functions

- How you can provide external functions (written in C) in a dynamic link
  library that can be accessed from Open Object Rexx (after they have been
  registered)

- How data can be returned from external functions.

- How the REXX Variable Pool Interface can be used to access and modify Open
  Object Rexx variables

WPIPE1
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Start: "REXX APITEST1"
Description: Registers a number of functions that produce some screen output or
             return some data.

WPIPE2
======
Start: "REXX APITEST2"
Description: Sets the value of a variable by using the REXX Variable Pool
             Interface

WPIPE3
======
Start: "REXX APITEST3"
Description: Demonstrates a more extensive use of the REXX Variable Pool
             Interface

For more information about the Open Object Rexx API, see Chapter 10, "Classic
Rexx Application Programming Intefaces" in the Open Object Rexx Programming
Guide.
