To install this package:
Download the latest release of the VSIX installer for your version of Visual Studio from the Releases page of the project site. The package can be installed in Visual Studio 2019 or Visual Studio 2022 or later.
Close all open instances of Visual Studio before installing the package.
Run the downloaded package and follow the prompts to install it.
This package can also be installed from within Visual Studio from the Visual Studio Marketplace (Visual Studio 2019 or Visual Studio 2022 or later) using the Tools | Extension and Updates option. Select the online marketplace and search for "doc comments provider". Include the quote marks for an exact match and find the one created by EWSoftware. Once found, you can click the Download button to download and install it.
Once installed, the extended elements, attributes, and attribute values will be provided in the completion popup list in the source code editor when entering XML comments.