Visual Studio & .NET Macros
The path where the Microsoft .NET Framework (highest version) is installed.
The path where the Microsoft .NET Framework SDK (highest version) is installed. Most SDK tools can be called by using a Run Program step with a Command like %DOTNETSDK_DIR%\bin\TlbImp.exe or %DOTNETSDK_DIR%\bin\x64\TlbImp.exe for the 64-bit binaries. Custom actions for many SDK tools are also available.
The base path where Visual Studio (.NET 2002 thru 2012; highest version) is installed.
Defines the NMAKE command-line make tool included with the Microsoft .NET Framework SDK, which can be used to build .NET Framework projects. Enter a step command of %NMAKE_NET% /? to see the available syntax, and view this link for more details.