This version of NMAKE offers the following new features:
New options: /B, /K, /M, /V (see pages 648–650)
Addition of .CPP and .CXX to the .SUFFIXES list (see page 688)
Predefined macros for C++ programs: CPP, CXX, CPPFLAGS, CXXFLAGS (see pages 676)
Predefined inference rules for C++ programs (see topic )
The !MESSAGE directive (see page 689)
Two preprocessing operators: DEFINED, EXIST (see page 691)
Three keywords for use with the !ELSE directive: IF, IFDEF, IFNDEF (see topic )
New directives: !ELSEIF, !ELSEIFDEF, !ELSEIFNDEF (see topic )