diff --git a/src/Home/Yuugure.ZC b/src/Home/Yuugure.ZC
deleted file mode 100755
index e449e4c5..00000000
--- a/src/Home/Yuugure.ZC
+++ /dev/null
@@ -1,29 +0,0 @@
-I64 initialWinBottom = sys_task->win_bottom;
-CDoc *initialDisplayDoc = sys_task->display_doc;
-
-U0 Yuugure()
-{
-  // Hide SysLog
-	if (sys_task->win_bottom != 0) {
-		while(sys_task->win_bottom > -1){
-			sys_task->win_bottom--;
-			Sleep(20);
-		}
-
-    sys_task->display_doc = NULL;
-		WinBorder(OFF, sys_task);
-	}
-  // Show SysLog
-	else {
-    	WinBorder(ON, sys_task);
-		sys_task->display_doc = initialDisplayDoc;
-
-		while(sys_task->win_bottom != initialWinBottom){
-			sys_task->win_bottom++;
-			Sleep(20);
-		}
-
-	}
-
-	WinZBufUpdate;
-}
diff --git a/src/HomeKeyPlugIns.ZC b/src/HomeKeyPlugIns.ZC
index 22e3f497..0563468d 100755
--- a/src/HomeKeyPlugIns.ZC
+++ b/src/HomeKeyPlugIns.ZC
@@ -114,9 +114,9 @@ Bool MyPutKey(I64 ch, I64 sc)
 						if (!(sc & SCF_SHIFT))
 						{
 							if (sc & SCF_KEY_DESC)
-								KeyDescSet("Cmd /Yuugure");
+								KeyDescSet("Cmd /SysLogToggle");
 							else
-								Yuugure;
+								SysLogToggle;
 						}
 						return TRUE;
 
diff --git a/src/Kernel/Job.ZC b/src/Kernel/Job.ZC
index 983a40da..a27489ed 100755
--- a/src/Kernel/Job.ZC
+++ b/src/Kernel/Job.ZC
@@ -504,6 +504,14 @@ I64 Sys(U8 *format, ...)
 	return res;
 }
 
+U0 SysLogToggle()
+{
+	if (Bt(&sys_task->display_flags, DISPLAYf_SHOW))
+		LBtr(&sys_task->display_flags, DISPLAYf_SHOW);
+	else
+		LBts(&sys_task->display_flags, DISPLAYf_SHOW);
+}
+
 U0 SysLog(U8 *format, ...)
 {//Display text in sys_task.
 	U8 *buf = StrPrintJoin(NULL, format, argc, argv);
diff --git a/src/Kernel/KGlobals.ZC b/src/Kernel/KGlobals.ZC
index 783ea116..31b9bdac 100755
--- a/src/Kernel/KGlobals.ZC
+++ b/src/Kernel/KGlobals.ZC
@@ -14,7 +14,7 @@ U8		*rev_bits_table; //Table with U8 bits reversed
 CDate	 local_time_offset;
 F64		*pow10_I64,
 		 sys_os_version = 2.03;
-U64		 sys_os_version_sub = 114;
+U64		 sys_os_version_sub = 115;
 U8		*sys_os_version_str;
 U8		*sys_os_version_full;
 U8		*sys_os_version_nice;
diff --git a/src/Kernel/KernelC.HH b/src/Kernel/KernelC.HH
index 3c984c9a..18c28999 100755
--- a/src/Kernel/KernelC.HH
+++ b/src/Kernel/KernelC.HH
@@ -437,6 +437,7 @@ public extern I64 Scale2Mem(I64 min, I64 max, I64 limit=2*1024*1024*1024);
 public extern	U0		 SysErr( U8 *format, ...);
 public extern	U0		 SysWarn(U8 *format, ...);
 public extern	U0		 SysLog( U8 *format, ...);
+public extern   U0       SysLogToggle();
 public extern	I64		 ExeCmdLine(CCompCtrl *cc);
 public extern	U0		 JobDel(CJob *tmpc);
 public extern	I64		 JobsHandler(I64 run_flags, CTask *task=NULL);