Erlang docstrings for edoc descriptions and dialyzer specs

gistfile1.txt

1> specs(test).
greeting(string(), integer()) -> [string()] | nil()
foo() -> ok
doit() -> ok
ok
2> specs({test, greeting, 2}).
greeting(string(), integer()) -> [string()] | nil()
ok
3> docs({test, greeting, 2}).
greeting/2: "This is another test"
ok
4> docs(test).
greeting/2: "This is another test"
foo/0: "Testing 456"
doit/0: "Testing 123"

------------
Specs and edoc description embedded in the compiled beam file using custom attributes.