Some books may be ordered with removable graphics (interactive).
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The books are spiral bound to assist readers to independently turn pages.
Laminated pages make the books durable and long-lasting.
Velcro is included.
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Icon sequences are easily interchangeable to accommodate various devices.
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Each book can accomodate up to three icon sequence sets. This can make one book useable with five different devices (Liberator - DeltaTalker - Pathfinder - Vanguard - Vantage).
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