Extension Packaging Details
The components of an extension (i.e. theme or module) are bundled into a package. An extension package is a zip file that contains all the files required by the extension.
The DNN manifest is an XML file that indicates how specific files in the extension package are processed during installation. The manifest is the most important part of an extension package.
Files that are common to all extension packages include MyLicense.txt, which is displayed to the user during package installation and MyReleaseNotes.txt, which lists the changes for the current version of the package.
If you use DNN templates and compile your extension in Visual Studio, the Release build automatically creates the manifest for you.