In order to use the footprints code:

1) At the footprints project root (PATH-TO-PROJECT/FOOTPRINTS), set the environment variables: '. env.sh'

2) Go back to the projects directory (/usr/local/soft) and set the PY3 python virtual environment: '. PY3/bin/activate'

3) Finally, go to the footprints project and to the bin directory (/usr/local/soft/FOOTPRINTS/BIN) and run the code: 'python runFootprints.py (XML mission file)' or 'python runAll.py' (to run all missions described into the missions directory (/usr/local/soft/FOOTPRINTS/MISSIONS))