diff -Nur opensim-/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs opensim/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
--- opensim-/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs	2010-01-16 14:05:34.000000000 +0800
+++ opensim/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs	2010-01-16 14:05:02.000000000 +0800
@@ -1052,6 +1052,74 @@
             throw new SelfDeleteException();
         }
 
+        // Fumi.Iseki
+        public void llGroundSet(int i, int j, double height)
+        {
+            m_host.AddScriptLPS(1);
+
+            if (World.Permissions.CanTerraformLand(m_host.OwnerID, new Vector3(i, j, 0)))
+            {
+                if (i>=World.Heightmap.Width)  i = World.Heightmap.Width - 1;
+                else if (i<0) i = 0;
+                if (j>=World.Heightmap.Height) j = World.Heightmap.Height - 1;
+                else if (j<0) j = 0;
+                World.Heightmap[i, j] = height;
+            }
+        }
+
+        // Fumi.Iseki
+        public void llGroundFill(double height)
+        {
+            m_host.AddScriptLPS(1);
+
+            int i, j;
+            for (j=0; j<World.Heightmap.Height; j++) {
+                for (i=0; i<World.Heightmap.Width; i++) {
+                    if (World.Permissions.CanTerraformLand(m_host.OwnerID, new Vector3(i, j, 0)))
+                    {
+                        World.Heightmap[i, j] = height;
+                    }
+                }
+            }
+        }
+
+        // Fumi.Iseki
+        public void llGroundSetByString(string str)
+        {
+            m_host.AddScriptLPS(1);
+
+            string[] buf = str.TrimEnd('\n').Split('\n');
+
+            int jj = 0;
+            foreach(string rec in buf) {
+                int j = World.Heightmap.Height - jj - 1;
+                if (j<0) break;
+                string line = rec.Trim(' ');
+
+                int i = 0;
+                foreach(string itm in System.Text.RegularExpressions.Regex.Split(line, " {1,}")) {
+                    if (i>=World.Heightmap.Width) break;
+                    if (World.Permissions.CanTerraformLand(m_host.OwnerID, new Vector3(i, j, 0))) {
+                        World.Heightmap[i, j] = double.Parse(itm);
+                    }
+                    i++;
+                }
+                jj++;
+            }
+        }
+
+        // Fumi.Iseki
+        public void llGroundUpdate()
+        {
+            m_host.AddScriptLPS(1);
+
+            ITerrainModule tm = m_ScriptEngine.World.RequestModuleInterface<ITerrainModule>();
+            if (tm != null)
+            {
+                tm.TaintTerrain();
+            }
+        }
+
         public LSL_Float llGround(LSL_Vector offset)
         {
             m_host.AddScriptLPS(1);
diff -Nur opensim-/OpenSim/Region/ScriptEngine/Shared/Api/Interface/ILSL_Api.cs opensim/OpenSim/Region/ScriptEngine/Shared/Api/Interface/ILSL_Api.cs
--- opensim-/OpenSim/Region/ScriptEngine/Shared/Api/Interface/ILSL_Api.cs	2010-01-16 14:05:34.000000000 +0800
+++ opensim/OpenSim/Region/ScriptEngine/Shared/Api/Interface/ILSL_Api.cs	2010-01-16 14:05:02.000000000 +0800
@@ -199,7 +199,11 @@
         LSL_Vector llGroundContour(LSL_Vector offset);
         LSL_Vector llGroundNormal(LSL_Vector offset);
               void llGroundRepel(double height, int water, double tau);
+              void llGroundSet(int x, int y, double height);  // Fumi.Iseki
+              void llGroundFill(double height);               // Fumi.Iseki
+              void llGroundSetByString(string str);           // Fumi.Iseki
         LSL_Vector llGroundSlope(LSL_Vector offset);
+              void llGroundUpdate();                          // Fumi.Iseki
         LSL_String llHTTPRequest(string url, LSL_List parameters, string body);
               void llHTTPResponse(LSL_Key id, int status, string body);
         LSL_String llInsertString(string dst, int position, string src);
diff -Nur opensim-/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Stub.cs opensim/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Stub.cs
--- opensim-/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Stub.cs	2010-01-16 14:05:34.000000000 +0800
+++ opensim/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Stub.cs	2010-01-16 14:05:02.000000000 +0800
@@ -854,11 +854,35 @@
             m_LSL_Functions.llGroundRepel(height, water, tau);
         }
 
+        // Fumi.Iseki
+        public void llGroundSet(int x, int y, double height)
+        {
+            m_LSL_Functions.llGroundSet(x, y, height);
+        }
+
+        // Fumi.Iseki
+        public void llGroundFill(double height)
+        {
+            m_LSL_Functions.llGroundFill(height);
+        }
+
+        // Fumi.Iseki
+        public void llGroundSetByString(string str)
+        {
+            m_LSL_Functions.llGroundSetByString(str);
+        }
+
         public LSL_Vector llGroundSlope(LSL_Vector offset)
         {
             return m_LSL_Functions.llGroundSlope(offset);
         }
 
+        // Fumi.Iseki
+        public void llGroundUpdate()
+        {
+            m_LSL_Functions.llGroundUpdate();
+        }
+
         public LSL_String llHTTPRequest(string url, LSL_List parameters, string body)
         {
             return m_LSL_Functions.llHTTPRequest(url, parameters, body);