XMP Specification September 2005 89 XMP Schemas Extensibility of Schemas 4 Extending Schemas Keep in mind the following points when extending a schema: ● New properties may be added to existing namespaces without “breaking” applications. ● The definitions of properties in existing namespaces should always remain the same otherwise, applications may produce incorrect behavior. If it is necessary to change the meaning of a property, a new property should be created (and the old one declared as deprecated). ● It is possible to create a “new version” of a schema namespace. However, there is no logical connection between the old version and the new version. The same local name in two different XML namespaces refers to two different properties

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