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Modifying default expressions


    All of your work adding, editing, and writing expressions occurs in the Timeline window. When you add an expression to a layer property, a default expression appears in a text field under the property. Use this field to type new expressions or edit expression variables. Some expressions rely on the names of layers or properties in your project; if you change the name of a layer property that is involved in an expression, the expression may produce an error message.

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