@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 storage\n(локальный vault)" as UC1
  usecase "Шифрование\nи открытие storage" 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