Index: SDDs/StopState.puml
===================================================================
diff -u
--- SDDs/StopState.puml	(revision 0)
+++ SDDs/StopState.puml	(revision 6f74e21d58f753b395dd059ec79960338229a54d)
@@ -0,0 +1,50 @@
+@startuml MainTreatmentScreenTimer
+
+    participant TD                  as TD
+    participant SW                  as SW
+    participant UI                  as UI
+    actor       USER                as US
+
+    'Possible actions and interaction types
+    ' TD -> SW: MSG: Message
+    ' SW -> UI: CMD: command
+    ' UI -> UI: ACT: Action
+    ' US -> UI: User actions are:
+    '   ENT: User enters a value or string
+    '   TCH: User touches a button (RadioButton, CheckBox, ...)
+    '   SET: User sets/slides a slider
+    '   SCL: User scrolls a flipable area
+    '
+    'Messages conventions:
+    '[x<hex message ID> <Req/Rsp/Dat>  \n  <P1>,<P..>]
+    '[x<hex message ID> <Req/Rsp/Dat>  \n  <P1>,# certain amount of parameters according to the content]
+    '[x<hex message ID> <Req/Rsp/Dat>  \n  <P1>,X The rest of the parameters do not matter.]
+
+    == Main Treatment Screen TImer ==
+    TD -> SW: MSG: [x3B: #3] \nTD Treatment Time Data:  \
+                        \n\t(U32) txDurSecs             \
+                        \n\t(U32) txElapsedSec          \
+                        \n\t(U32) txRemainingSecs
+    SW -> UI: CMD: Update Treatment Time (VTreatmentTime):  \
+                        \n\ttime_Total                      \
+                        \n\ttime_Elapsed                    \
+                        \n\ttime_Remaining
+    US -> UI: TCH: Edit Button
+    UI -> UI: ACT: Treatment Adjustment Duration Popup
+
+    TD -> SW: MSG: [x3C: #10] \nTD Treatment States:    \
+                        \n\t(U32) mSubMode              \
+                        \n\t(U32) mBloodPrimeState      \
+                        \n\t(U32) mDialysateState       \
+                        \n\t(U32) mIsolatedUFState      \
+                        \n\t(U32) mTreatmentStopState   \
+                        \n\t(U32) mRinsebackState       \
+                        \n\t(U32) mRecirculateState     \
+                        \n\t(U32) mTreatmentEndState    \
+                        \n\t(U32) mSalineState          \
+                        \n\t(U32) mHeparinState
+    SW -> UI: CMD: Paued State (VTDTreatmentStates):\nTREATMENT_PAUSED_STATE (txStop)
+    UI -> UI: ACT: Visual Indication Treatment is Paused:       \
+                        \n\tNotification on Timer               \
+                        \n\tFade in/out effect of timer progress
+@enduml
\ No newline at end of file