[orion-dev] application client vs toolkit frameworks?

[John J Barton <johnjbarton@xxxxxxxxxxxxxxx>]

editor/web/js/model.js onChange says:
This notification is intended to be used only by the editor. Application 
clients should
        * use {@link eclipse.Editor#event:onModelChanged}.
        * </p>
        * <p>
        * NOTE: This method is not meant to called directly by 
application code. It is called internally by the TextModel
        * as part of the implementation of {@link #setText}. This 
method is included in the public API for documentation
        * purposes and to allow integration with other toolkit frameworks.

What is an application client and what is "other toolkit framework"?

I have a program that wants to know when the editor makes a change.

jjb