Apple Logic Pro 9 - Manual (Page 920)

The Chord Grid Library window consists of two or three tabbed pages, depending on
which method you use to open the window. These tabbed pages are the Instrument
Editor, Chord Grid Selector, and Chord Grid Editor.
To open the Chord Grid Library
Do one of the following:
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Choose Logic Pro > Preferences > Chord Grid Library in the main menu bar.
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Click the Preferences button in the Arrange toolbar, then choose Chord Grid Library from
the pop-up menu.
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Choose Layout > Chord Grid Library in the Score Editor’s menu bar.
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Drag a chord grid symbol from the Part box into the score.
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Double-click an existing chord grid symbol in the score.
Note: The Instrument Editor tab is only available if you use one of the first three methods
to open the Chord Grid Library.
920 Chapter 31 Working with Notation