diff --git a/lib/sync_decim_impl.cc b/lib/sync_decim_impl.cc
index a32d9a4..418f68f 100644
--- a/lib/sync_decim_impl.cc
+++ b/lib/sync_decim_impl.cc
@@ -115,13 +115,13 @@ namespace gr {
             if(mode==COPY){
               out[i]=in[DECIM*i];
             }
-            else if(mode==SKIP){
+            else if(mode==SKIP){//merges with left value
               if(i==0){
                 out[i]=last_input-in[DECIM*i];}
                 else{
                   out[i]=in[DECIM*i-1]-in[DECIM*i];}
             }
-            else if(mode==NOSKIP){
+            else if(mode==NOSKIP){//merges with right value
               out[i]=in[DECIM*i]-in[DECIM*i+1];
             }
             //lout<<std::fixed << std::setprecision(3)<<out[i]<<".";
diff --git a/python/core b/python/core
deleted file mode 100644
index ca453ea..0000000
Binary files a/python/core and /dev/null differ
diff --git a/python/rds_parser_table_qt.py b/python/rds_parser_table_qt.py
index 37a86cd..e70804a 100644
--- a/python/rds_parser_table_qt.py
+++ b/python/rds_parser_table_qt.py
@@ -197,12 +197,21 @@ class rds_parser_table_qt(gr.sync_block):#START
             freq=self.decoder_frequencies[num]
             pilot_SNR=self.decoders[num]['pilot_SNR']
             decim_mode=self.decoders[num]['decim_mode']
+            if decim_mode==0:#copy
+                underline=""
+                #underline="text-decoration-line: underline;text-decoration-style: wavy;text-decoration-color: red;"
+            elif decim_mode==1:#skip (merges with left value)
+                underline="text-decoration:overline"
+            elif decim_mode==2:#noskip (merges with right value)
+                underline="text-decoration:underline"
+            else:
+                underline=""
             if self.decoders[num]['synced']:
-                message_string+="<span style='color:green'>&emsp; %i:%0.1fM (%i dB, %i)</span>"% (num,freq/1e6,pilot_SNR,decim_mode)
+                message_string+="<span style='color:green;%s'>&emsp; %i:%0.1fM (%i dB)</span>"% (underline,num,freq/1e6,pilot_SNR)
                 #print("'color:green'>%i:%0.1fM</span>"% (num,freq/1e6))
             else:#elif self.decoders[num]['synced']==False:
                 #print("'color:red'>%i:%0.1fM</span>"% (num,freq/1e6))
-                message_string+="<span style='color:red'>&emsp; %i:%0.1fM (%i dB, %i)</span>"% (num,freq/1e6,pilot_SNR,decim_mode)
+                message_string+="<span style='color:red;%s'>&emsp; %i:%0.1fM (%i dB)</span>"% (underline,num,freq/1e6,pilot_SNR)
         message_string+="<br>tuned frequency:%0.1fM"%(self.tuning_frequency/1e6)
         self.signals.DataUpdateEvent.emit({'decoder_frequencies':message_string})
         #print(message_string)
@@ -1095,8 +1104,7 @@ class rds_parser_table_qt_Widget(QtGui.QWidget):
         self.freq_label.setWordWrap(True)
         self.freq_label.setSizePolicy(QtGui.QSizePolicy(QtGui.QSizePolicy.Expanding, 
                                                         QtGui.QSizePolicy.Ignored))#expand in horizontal direction and only wrap if window too small
-        #self.freq_label.setTextFormat(QtCore.Qt.RichText)
-        #self.freq_label.setTextFormat(QtCore.Qt.PlainText)
+        self.freq_label.setTextFormat(QtCore.Qt.RichText)#instead of AutoText
         self.count_label=QtGui.QLabel("count:")
         self.count_label.setAlignment(QtCore.Qt.AlignRight)
         label_layout.addWidget(self.freq_label)
@@ -1315,20 +1323,33 @@ class rds_parser_table_qt_Widget(QtGui.QWidget):
         view.setWindowTitle(self.tableobj.RDS_data[PI]["PSN"])
         view.exec_()
     def onCLick(self):
+        from thread import start_new_thread
         print("button clicked")
-        code.interact(local=locals())
+        #code.interact(local=locals())
+        start_new_thread(self.interact,())
+    def interact(self):
+        code.interact(local=dict(globals(), **locals()))
 if __name__ == "__main__":
     from PyQt4 import Qt
     import sys
-
-
-    app = Qt.QApplication(sys.argv)
-    mainobj= rds_parser_table_qt_Signals()
-    #mainobj=None
-    widget = rds_parser_table_qt_Widget(mainobj,"TestLabel")
+    from thread import start_new_thread
+    class dummy:
+        def __init__(self):
+            self.colorder=['ID','freq','name','buttons','PTY','AF',
+                       'time','text','quality','pilot_SNR','RT+']
+            self.nPorts=4
+    qapp = Qt.QApplication(sys.argv)
+    signals= rds_parser_table_qt_Signals()
+    mainobj=dummy()
+    widget = rds_parser_table_qt_Widget(signals,"TestLabel",mainobj)
     widget.show()
     widget.setWindowTitle("Test Qt gui")
     widget.setGeometry(200,200,600,300)
-    sys.exit(app.exec_())
+    def quitting():
+        print("quitting")
+        sys.exit()
+    qapp.connect(qapp, Qt.SIGNAL("aboutToQuit()"), quitting)
+    qapp.exec_()
+    #sys.exit(app.exec_())
 
     widget = None