Here is a list of all documented concepts with brief descriptions:

[detail level 123]

Nsourcemeta
Ncore
Rjson_auto_has_mapped_type
Rjson_auto_has_method_from
Rjson_auto_has_method_to
Rjson_auto_supports_auto
Rjson_auto_list_like
Rjson_auto_map_like
Rjson_auto_has_reverse_iterator
Rjson_auto_tuple_mono
Rjson_auto_tuple_poly
Rdecimal_or_integral
Rany_decimal
Rtest_comparable_integer
Rtest_streamable
Rtest_diffable_string
Rtext_spellable_integer