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https://docs.adobe.com/docs/en/aem/6-3/administer/content/package-manager.html
How to Work With Packages
Packages enable the importing and exporting of repository content.
For example, you can use packages to install new functionality, transfer content between instances, and back up repository content.
Packages can be accessed and/or maintained from the following pages:
- Package Manager, which you use to manage the packages in your local AEM instance.
- Package Share, a centralized server holding both publicly available packages and those private to your company. The public packages can contain hotfixes, new functionality, documentation, etc.
You can transfer packages between Package Manager, Package Share, and your file system.
AEM - Adobe Experience Manager
What are Packages?
A package is a zip file holding repository content in the form of a file-system serialization (called "vault" serialization).
This provides an easy-to-use-and-edit representation of files and folders.
Packages include content, both page-content and project-related content, selected using filters.
A package also contains vault meta information, including the filter definitions and import configuration information. Additional content properties (that are not used for package extraction) can be included in the package, such as a description, a visual image, or an icon; these properties are for the content package consumer and for informational purposes only.
Package & Version
Package 只代表了它们被创建时的那个版本的内容，
而不包括任何以前版本的内容。以前的这些版本被 AEM 存放在了其仓库中。
Package Filters
Filters identify the repository nodes to include in the package.
A (One) Filter Definition specifies the following information:
- The Root Path of the content to include.
- Rules that include or exclude specific nodes below the root path.
Filters can include zero or more rules. When no rules are defined, the package contains all content below the root path.
You can define one or more filter definitions for a package.
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Package Manager
The Package Manager manages the packages on your local AEM installation.
After you have assigned the necessary permissions, you can use the Package Manager for various actions, including configuring, building, downloading and installing your packages.
The key elements to be configured are:
- Package Settings
- Package Filters
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