How Do You Automate a Process That Involve a GUI Operation with Powershell?

Question:  How Do You Automate a Process That Involve a GUI (e.g., to save an .xps or .oxps file) Operation with Powershell?  You do not want any part to be interactive.

Solution:  This applies to PowerShell version 4 and above.  This will save the content of c:\temp\contint.txt to goodName.xps in the default folder (often the user’s Documents folder) without needing to attend to the process.

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