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PATH Documentation > Mac OS 8 and 9 > Interapplication Communication > PPC Toolbox

You can use the Program-to-Program Communications (PPC) Toolbox to send and receive low-level message blocks between applications. The PPC Toolbox can be used by multiple applications running on the same computer or across a network.

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    Inside Macintosh Documents
Inside Macintosh:Interapplication Communication
(Chapter 11 - Program-to-Program Communications Toolbox)
This document describes the parts of the Macintosh system software that allow your application to communicate and work with other applications. Chapter 11 describes how to use the Program-to-Program Communications Toolbox and includes an overview, a tutorial, and a complete API reference.