How to define domain ordering?

[Alaya-in-Matrix]

It seems that to use discrete fidelities, I need to define the domain_ordering, but I can't find documentation about how the ordering should be defined.

[latmarat]

I am a beginner with dragonfly myself but it looks like you could get orderings from the "configuration" dictionary, which contains domain information. See lines 35 and 44 of one of the examples:

config = load_config_file(config_file)
domain, domain_orderings = config.domain, config.domain_orderings