@startuml Saline_Bolus_Data(id=Saline_Bolus_Data)

    participant TD                  as TD
    participant SW                  as SW
    participant UI                  as UI
    actor       USER                as US

    'Possible actions and interaction types
    ' External on CANBus
    ' TD -> SW: MSG: Message
    ' SW -> TD: MSG: Message

    ' Internal to the application
    ' XX -> YY: CMD: Command
    ' XX -> XX: ACT: Action

    ' External on OS/FS
    ' SW -> Script: ACT: Command
    ' Script -> OS: CMD: Command
    ' Script -> SW: MSG: Message
    ' OS -> Script: MSG: Message

    ' US -> UI: User actions are:
    '   ASK: Display a <message>
    '   ENT: User enters a value or string
    '   TCH: User touches a button (RadioButton, CheckBox, ...)
    '   SCL: User scrolls a flip-able area

    == Saline Data ==
    TD -> SW: MSG: [x3D: #4] \nTD Saline Bolus Status Data\n(U32) ntgtVolMl\n(F32) cumVolMl\n(F32) bolVolMl\n(U32) sbState
    SW -> UI: CMD: Update Saline Bolus Data\n(U32) ntgtVolMl\n(F32) cumVolMl\n(F32) bolVolMl\n(U32) sbState
    UI -> US: ACT: Display updated Values

@enduml