The default profile is documented in the profile properties section of the Zonemaster::Engine::Profile module.
The default profile is stored in a default profile file, profile.json, always loaded by Zonemaster-Engine.
Some properties are empty by default such as logfilter and
test_cases_vars. These properties are not present in the default
profile. For an example of their usage, refer to the example file,
profile_example.json.