gistfile1.txt

todoStatus = done | notdone |  in-progress |  under review | blocked
todoPriority = A | B | C | unset
todoStickers = A | B | C | unset
todoDueDate = Date date | unset


todo {
    name string
    status todoStatus
    priority todoPriority
    stickers = todoStickers
    duedate = todoDueDate
    visibility = todoVisibilty
}

todoList {
    list todo[]
    getCount() :  int
    publicList() : todoList
    filterList(...) : todoList
}

user {
    name string
    list todoList
    friends user[]

    AddTodo(todo)
    CompleteTodo(todo)

    getList(): todoList
    getListByFilter(..) : todoList
    getListByFriendToDo(friend user) : todoList // get a friends list and call publicList on it.  
}