/Get-Packages /Format: Displays information about all packages in the image. Use the /Format option to specify a table or ...

/Get-Packages [/Format:] 

  Displays information about all packages in the image.  Use the /Format option 
  to specify a table or list format for the output.  If /Format is not 
  specified, the output is formatted as a list. 

    Examples: 
      DISM.exe /Image:C:\test\offline /Get-Packages 
      DISM.exe /Format:Table /Image:C:\test\offline /Get-Packages 
      DISM.exe /Format:List /English /Image:C:\test\offline /Get-Packages 

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