LFE: * http://lfe.io/tutorial/records/index.html * http://lfe.io/tutorial/records/mods.html * http://lfe.io/tutorial/records/headers.html Erlang: * https://erlang.org/doc/getting_started/record_macros.html * https://erlang.org/doc/getting_started/record_macros.html#header-files * https://erlang.org/doc/getting_started/record_macros.html#the-larger-example-divided-into-several-files
