Script Download:  
The script is available for download in Microsoft Script Browser for Windows PowerShell ISE. You need to install the Script Browser application first, and search for the script sample title.

This script sample shows how to add a site list to Enterprise Mode. 

Enterprise Mode is a new feature in Internet Explorer that allows businesses to use old web applications in modern versions of IE. It is a compatibility mode that runs on Internet Explorer 11 on Windows 8.1. In a way, if we want to open multiple sites as Enterprise Mode, we have to set it manually. Actually we can add multiple sites to your Enterprise Mode site list by creating a XML file of problematic sites, and with use this script to add site list to Enterprise Mode.

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You can find more All-In-One Script Framework script samples at