@echo off
echo A simple demonstration of MNU program principles.
rem  This is the control batch with main loop of applications.
rem  Execute this batch and try.

rem ............... default settings
set FILE=noname
set MNU=50

:menu
rem ............... the MNU call
mnu demo.mnu envir.bat
rem ............... what is choosen ?
if errorlevel 50 goto file
if errorlevel 40 goto print
if errorlevel 30 goto execute
if errorlevel 20 goto compile
if errorlevel 10 goto edit
goto quit

:edit
  echo RUN editor here with the file %FILE%.pas
  set MNU=20
  goto menu

:compile
  echo RUN compiler here to the file %FILE%.pas
  set MNU=30
  rem if errorlevel 1 set MNU=10 (if not succesfull then return to Edit)
  goto menu

:execute
  echo EXECUTE the file %FILE%.exe
  set MNU=10
  goto menu

:print
  echo RUN the convertor  %FILE%.pas to %FILE%.lst
  echo PRINT the file %FILE%.lst
  set MNU=10
  goto menu

:file
  call envir.bat
  set MNU=10
  goto menu

:quit
  echo End of demonstration, bye !