anchor.diff:  :# For each line in CMD output...
   %FOREACHLINE% %%i in ('%CMD% 2^>NUL') do (
     set "LINE=%%i"
  -  %ECHOVARS.D% LINE
  +  :# %ECHOVARS.D% LINE
     :# Values are indented by 4 spaces.
     set "HEAD=!LINE:~0,4!"
     set "LINE=!LINE:~4!"
  
positive.code: echo   -masm PATH    Path to MASM install dir. Default: C:\MASM
  echo   -msvc PATH    Path to MSVC 16-bits tools install dir. Default: C:\MSVC
  echo   -o OUTDIR     Output base directory. Default: .
  echo   -r            Recursively configure all subprojects. Uses make config
  echo   -v            Verbose mode. Display what this script does
  echo   -vs PATH      Path to Visual Studio install dir. Default: Latest avail.
  echo   -V            Display %SCRIPT% version
  
negative.code: set "Exec.Echo=rem"
  %IF_NOEXEC% set "Exec.Echo=echo"
  %IF_DEBUG% set "Exec.Echo=echo"
  %Exec.IF_VERBOSE% set "Exec.Echo=echo"
  %>DEBUGOUT% %Exec.Echo%.%INDENT%%Exec.toEcho%
  if defined LOGFILE %>>LOGFILE% echo.%INDENT%%Exec.toEcho%
  :# Constraints at this stage:
  