http://blogs.msdn.com/powershell/archive/2006/04/30/how-powershell-formatting-and-outputting-really-works.aspx&lt;WIZARD WARNING&gt; Dreeschkind posted a question in the Microsoft.Public.Windows.Server.Scripting newsgroup about how PowerShell formatting worked with Select. He saw some behavior that he thought was a bug. Here is what he saw: PoSh C:\&gt; gps |en-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/powershell/archive/2006/04/30/how-powershell-formatting-and-outputting-really-works.aspx#599348Wed, 17 May 2006 01:15:11 GMT91d46819-8472-40ad-a661-2c78acb4018c:599348Phil O'SerfPowerShell defines XML schema and a mechanism (the Update-FormatData cmdlet) where anyone can register views for an object type. &nbsp; <br> <br>Where is the schema defined? I can reverse engineering bits of it from the ps1xml files that ship in RC1 but haven't been able to find anything beyond a few examples of user ps1xml files.http://blogs.msdn.com/powershell/archive/2006/04/30/how-powershell-formatting-and-outputting-really-works.aspx#7212394Thu, 24 Jan 2008 00:07:23 GMT91d46819-8472-40ad-a661-2c78acb4018c:7212394Jason<p>This document gives an overview of the schema:</p> <p><a rel="nofollow" target="_new" href="http://msdn2.microsoft.com/en-us/library/bb394649.aspx">http://msdn2.microsoft.com/en-us/library/bb394649.aspx</a></p> <p>Now, what do I have to do to make the formatting permanent? &nbsp;If I run Update-FormatData, that only stays in effect while that instance of PowerShell is open.</p>http://blogs.msdn.com/powershell/archive/2006/04/30/how-powershell-formatting-and-outputting-really-works.aspx#7279665Mon, 28 Jan 2008 07:24:30 GMT91d46819-8472-40ad-a661-2c78acb4018c:7279665marco.shaw<p>Either you modify the default .ps1xml files (**not recommended**) or you simply drop your update-formatdata into your profile to run it everytime (notepad $profile).</p>