diff --git a/src/setting_defines.h b/src/setting_defines.h
--- a/src/setting_defines.h
+++ b/src/setting_defines.h
@@ -30,6 +30,7 @@ const char SettingGroup_Channels[] = "Ch
 const char SettingGroup_Plot[] = "Plot";
 const char SettingGroup_Commands[] = "Commands";
 const char SettingGroup_Record[] = "Record";
+const char SettingGroup_UpdateCheck[] = "UpdateCheck";
 
 // mainwindow setting keys
 const char SG_MainWindow_Size[] = "size";
@@ -57,6 +58,8 @@ const char SG_Binary_Endianness[] = "end
 
 // ascii reader keys
 const char SG_ASCII_NumOfChannels[] = "numOfChannels";
+const char SG_ASCII_Delimiter[] = "delimiter";
+const char SG_ASCII_CustomDelimiter[] = "customDelimiter";
 
 // framed reader keys
 const char SG_CustomFrame_NumOfChannels[] = "numOfChannels";
@@ -76,6 +79,9 @@ const char SG_Channels_Visible[] = "visi
 
 // plot settings keys
 const char SG_Plot_NumOfSamples[] = "numOfSamples";
+const char SG_Plot_IndexAsX[] = "indexAsX";
+const char SG_Plot_XMax[] = "xMax";
+const char SG_Plot_XMin[] = "xMin";
 const char SG_Plot_AutoScale[] = "autoScale";
 const char SG_Plot_YMax[] = "yMax";
 const char SG_Plot_YMin[] = "yMin";
@@ -84,6 +90,7 @@ const char SG_Plot_Grid[] = "grid";
 const char SG_Plot_MinorGrid[] = "minorGrid";
 const char SG_Plot_Legend[] = "legend";
 const char SG_Plot_MultiPlot[] = "multiPlot";
+const char SG_Plot_Symbols[] = "symbols";
 
 // command setting keys
 const char SG_Commands_Command[] = "command";
@@ -99,4 +106,8 @@ const char SG_Record_Header[]           
 const char SG_Record_Separator[]        = "separator";
 const char SG_Record_DisableBuffering[] = "disableBuffering";
 
+// update check settings keys
+const char SG_UpdateCheck_Periodic[]  = "periodicCheck";
+const char SG_UpdateCheck_LastCheck[] = "lastCheck";
+
 #endif // SETTING_DEFINES_H