diff --git a/README.md b/README.md
new file mode 100644
index 0000000..2a987ef
--- /dev/null
+++ b/README.md
@@ -0,0 +1,3 @@
+
+libcm is a C application development framework with an emphasis on audio signal processing.
+
diff --git a/src/cmMsgProtocol.h b/src/cmMsgProtocol.h
index d4f29db..e96e96a 100644
--- a/src/cmMsgProtocol.h
+++ b/src/cmMsgProtocol.h
@@ -41,6 +41,7 @@ extern "C" {
     kDeviceDuiId,          // ui<--eng device label
     kProgramDuiId,         // ui<--eng program label
     kProgramDfltDuiId,     // ui<--eng dflt program label
+    kPgmDoneDuiId,         // ui<--end the program is done 
     
     // The following selId's are used by cmAudDsp to indicate various commands.
     kSetAudioCfgDuiId,     // 1) select an audio system setup
@@ -54,7 +55,7 @@ extern "C" {
     kSendMsgDuiId,         // forward msg to the audio system
     kDevReportDuiId,       // print a device report
     kPrintPgmDuiId,        // write the currently loaded pgm as a JSON file
-
+    
     kRightAlignDuiId = 0,  // label alignment id used by kLabelDuiId 
     kLeftAlignDuiId,  
     kCenterAlignDuiId
diff --git a/src/dsp/cmDspClass.h b/src/dsp/cmDspClass.h
index c1c4ed0..8d2da2e 100644
--- a/src/dsp/cmDspClass.h
+++ b/src/dsp/cmDspClass.h
@@ -390,6 +390,9 @@ extern "C" {
   // Used to transmit messages to the audio system.
   cmDspRC_t  cmDspSendValueToAudioSys( cmDspCtx_t* ctx, unsigned msgTypeId, unsigned selId, unsigned valId, const cmDspValue_t* valPtr ); 
 
+  // Notify the system that the program is done and can be shutdown
+  cmDspRC_t cmDspProgramIsDone( cmDspCtx_t* ctx );
+  
   // The following functions are used to send message to the UI and are 
   // implemented in cmDspUi.c.  They are declared here because they are 
   // visible to the cmDspInst functions which use them but are not available
@@ -417,7 +420,7 @@ extern "C" {
   cmDspRC_t   cmDspUiFnameCreate(  cmDspCtx_t* ctx, cmDspInst_t* inst, unsigned valVarId, unsigned patVarId, unsigned dirVarId );
   cmDspRC_t   cmDspUiMsgListCreate(cmDspCtx_t* ctx, cmDspInst_t* inst, unsigned height, unsigned listVarId, unsigned selVarId );
 
- 
+  
   //)
   
 #ifdef __cplusplus
diff --git a/src/dsp/cmDspUi.c b/src/dsp/cmDspUi.c
index 2aff36c..4ae728f 100644
--- a/src/dsp/cmDspUi.c
+++ b/src/dsp/cmDspUi.c
@@ -188,6 +188,9 @@ cmDspRC_t _cmDspUiUseInstSymbolAsLabel( cmDspCtx_t* ctx, cmDspInst_t* inst, unsi
 cmDspRC_t  cmDspSendValueToAudioSys( cmDspCtx_t* ctx, unsigned msgTypeId, unsigned selId, unsigned valId, const cmDspValue_t* valPtr )
 { return _cmDspUiMsg(ctx, msgTypeId, selId, 0, NULL, valId, valPtr ); }
 
+cmDspRC_t cmDspProgramIsDone( cmDspCtx_t* ctx )
+{ return _cmDspUiMsg(ctx, kUiSelAsId, kPgmDoneDuiId, 0, NULL, cmInvalidId, NULL ); }
+
 cmDspRC_t   cmDspUiConsolePrint( cmDspCtx_t* ctx, cmChar_t* text )
 {
   cmDspValue_t v;
@@ -514,3 +517,4 @@ cmDspRC_t  cmDspUiNewPage(          cmDspCtx_t* ctx, const cmChar_t* title )
 
   return rc;
 }
+