diff --git a/PROMS/XYPlots/XYPlots.cs b/PROMS/XYPlots/XYPlots.cs
index d0eaa540..aa05b592 100644
--- a/PROMS/XYPlots/XYPlots.cs
+++ b/PROMS/XYPlots/XYPlots.cs
@@ -332,7 +332,7 @@ namespace XYPlots
 		{
 			int retval;
 			string np = NextPiece();
-			np = Regex.Replace(np, "[^0-9]", "");
+			np = Regex.Replace(np, "[^-0-9]", "");
 			retval = Convert.ToInt32(np, 10);
 			return retval;
 		}
@@ -1610,6 +1610,8 @@ namespace XYPlots
 			newmaximum = ((int)(maximum[flag] / delta[flag])) * delta[flag];
 			if (newmaximum < maximum[flag] - (delta[flag] * 0.001))
 				newmaximum += delta[flag];
+			// B2017-008 Support a reverse Axis which goes from a larger value to a smaller value.
+			if (newmaximum < newminimum) delta[flag] = -delta[flag];
 			minimum[flag] = newminimum;
 			maximum[flag] = newmaximum;
 		}
@@ -1877,6 +1879,18 @@ namespace XYPlots
 			//VG.VG_Arc.iColor = 0;
 //#endif
 		}
+		private int _OffsetX = 0;
+		public int OffsetX
+		{
+			get { return _OffsetX; }
+			set { _OffsetX = value; }
+		}
+		private int _OffsetY = 0;
+		public int OffsetY
+		{
+			get { return _OffsetY; }
+			set { _OffsetY = value; }
+		}
 		public void Setup()
 		{
 			char Command, PrevCommand = ' ';
@@ -1890,6 +1904,10 @@ namespace XYPlots
 				ShadowFlag = 0;
 				switch (Command)
 				{
+					case 'O':
+						OffsetX = getint();
+						OffsetY = getint();
+						break;
 					case 'T':
 						ShadowFlag += 2; // 2 for no box
 						GetBoxParameters();