@startuml fig_17_use_case
scale 3
title Диаграмма прецедентов Wallenc
skinparam defaultFontName "DejaVu Sans"
left to right direction

actor "Пользователь" as User
rectangle "Wallenc" {
  usecase "Управление\nлокальными vault" as UC1
  usecase "Шифрование\nи открытие vault" as UC2
  usecase "Работа с\nсодержимым" as UC3
  usecase "OAuth и\nудалённые vault" as UC4
  usecase "Синхронизация\nгрупп" as UC5
  usecase "Фоновые\nзадачи" as UC6
}

User --> UC1
User --> UC2
User --> UC3
User --> UC4
User --> UC5
User --> UC6
UC4 ..> UC5 : include
UC2 ..> UC6 : extend

@enduml