META

Folder Structure

|v Document_name.oca
 |- Document_name.oca
 |v Layer_name_1
  |- Layer_name_1_00000.png
  |- Layer_name_1_00110.png
  |- Layer_name_1_00112.png
  |- Layer_name_1_00114.png
  |- Layer_name_1_00200.png
 |v Group_name_2
  |v Layer_name_3
   |- Layer_name_3_00000.png
   |- Layer_name_3_00003.png
  |> Layer_name_4
  |> Layer_name_5
 |> Group_name_6

Note that the .oca file at the root could also use the extension .json