luos/config/enviromentvariables.json

{
  "name": "Environment variables",
  "description": "Definition of system constants",
  "constants": {
    "userguest": {
      "uid": "00000000000000000000000000000002",
      "firstname": "Guest",
      "lastname": "Guest",
      "username": "guest"
    }
  },
  "validation": {
    "pmVariable": {
      "regEx": "/^[a-zA-Z\\_]{1}\\w+$/"
    }
  }
}