str = "s"
int = 123
float = 1.23
date = 2021-12-18T12:15:12+09:00
arr = ["first", "second", "third" ]

[table]
  first = "zzz"
  second = "yyy"

[[arr_of_tables]]
hidden = "tale"

[[arr_of_tables]]
hoge = 1
fuga = 2

[[arr_of_tables]]
inner_arr = [1, 2, 3]