Here is a list of all concepts with brief descriptions:

Nwelder
Nnaming
Rname_style	A name style names every kind of entity welder can bind, through one hook per kind
Rcaster_oracle	The one bindability fact a backend must provide: can it natively convert a type without welder registering it?
Rrod	The contract a rod (a welder backend, welder::rods::…::rod) must satisfy to plug into the generic driver
Rresolution	The contract a resolution — the carriage's which-participates policy — must satisfy to be injected as welder::carriages::basic_carriage's Resolution argument
Rdoc_style	A style folds a welder::detail::function_doc into one docstring