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Hour 4. Using the Library for Productivity > The Concept of the Library

The Concept of the Library

The process of using the Library involves creating symbols and then using instances of those symbols throughout a movie. You always have one master version of a symbol stored in the Library. You can drag multiple instances of that symbol from the Library to any other part of the movie—even inside other symbols. This might seem like a meaningless procedure, but it has two valuable benefits. First, it means that file size remains small because only the master symbol adds to the file size, and each instance just points to the master (similarly to how a shortcut in Windows or an alias on the Macintosh points to a master file). Second, you can make a visual change to the master symbol, and that change is then reflected in each instance. This is similar to using styles in a word processing document: You make a change to the style, and each instance where you use that style reflects the change. You'll learn more about these benefits in a minute, but let's first go over the basics of how to create and use symbols.

How to Create and Use Symbols

You can use two methods to create symbols: You can either convert any selected object onstage to a symbol or make a symbol from scratch. The following task looks at the first of these methods.


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