Pharo 2.0 HelpBrowser Announcements STEP 3 QUOTE:
In Pharo there is a global called "World" pointing to the desktop morph. This world also has an announcer we can use to demonstrate the features of the framework: | announcer | World announcer on: WindowOpened send: #value to: [ Transcript show: 'A new window was opened';cr]. So anytime a window is opened in the system a message is shown in the transcript: Transcript open. | announcer | World announcer on: WindowOpened send: #value to: [:ea | ea inspect. Transcript show: 'A new window was opened';cr].
