anchor.diff:  
   :: Check for .NET 4.6.1 x64
   set x64key=HKLM\SOFTWARE\Microsoft\.NETFramework
  -if not defined ProgramFiles(x86) goto win32
   :: 4.6.1 x64
   %WINDIR%\system32\reg.exe query %x64key%  /f ".NETFramework,Version=v4.6.1" /k /s >NUL ^
     || ( echo. & echo ** Microsoft .NET Framework 4.6.1 ^(x64^) not installed! ** & goto dotnet_fail)  
  
positive.code: ::          ArcGISProHelp.cab
  ::          ArcGISProHelp.msi      
  ::
  :: References:
  :: * ArcGIS 10.4 / Pro 1.2 Enterprise Deployment
  ::    http://support.esri.com/white-paper/3522
  :: * ArcGIS Pro installation guide: 
  ::   .\Esri\ArcGISPro\Documentation\install.htm
  ::
  :: Author: Curtis Price, cprice@usgs.gov
  ::
  
negative.code: :: install_arcgispro.bat
  :: Silent install of ArcGIS Pro 
  :: 
  