- Download and install Java version 17+, if necessary.
- Download ANTLR Java runtime 4.13.2 jar (not the complete tool jar).
- Download SIMPLE.jar and simplexe.bat from here.
- Place SIMPLE.jar and antlr-runtime-4.13.2.jar in the same directory.
- Edit simplexe.bat and replace %PATHGOESHERE% with the path to the directory above.
- Place simplexe.bat in a directory included in your system PATH environment variable.