# GrowlDisplayProtocol.h

Protocols implemented by plug-ins' principal classes.

This header describes protocols that Growl uses to identify specific types of plug-ins. As of Growl 0.6, there are two types of plug-ins, each with its own protocol: display plug-ins, which display Growl notifications to the user; and functional plug-ins, which add features to the Growl core.

© The Growl Project (Last Updated May 14, 2005)
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