diff --git a/sk_demo/src/Mono.cs b/sk_demo/src/Mono.cs
index 7c7323c..079779b 100644
--- a/sk_demo/src/Mono.cs
+++ b/sk_demo/src/Mono.cs
@@ -28,159 +28,159 @@ public class Mono {
     }
   }
 
-  // key:(string) value:(int[] dots)
-  Dictionary<string, int[]> char_cell = new Dictionary<string, int[]> {
-    { "a", new int[] {
+  // key:(char) value:(int[] dots)
+  Dictionary<char, int[]> char_cell = new Dictionary<char, int[]> {
+    { ' ', new int[] {
+      0, 0,
+      0, 0,
+      0, 0
+    } },
+    { 'a', new int[] {
       1, 0,
       0, 0,
       0, 0
     } },
-    { "b", new int[] {
+    { 'b', new int[] {
       1, 0,
       1, 0,
       0, 0
     } },
-    { "c", new int[] {
+    { 'c', new int[] {
       1, 1,
       0, 0,
       0, 0
     } },
-    { "d", new int[] {
+    { 'd', new int[] {
       1, 1,
       0, 1,
       0, 0
     } },
-    { "e", new int[] {
+    { 'e', new int[] {
       1, 0,
       0, 1,
       0, 0
     } },
-    { "f", new int[] {
+    { 'f', new int[] {
       1, 1,
       1, 0,
       0, 0
     } },
-    { "g", new int[] {
+    { 'g', new int[] {
       1, 1,
       1, 1,
       0, 0
     } },
-    { "h", new int[] {
+    { 'h', new int[] {
       1, 0,
       1, 1,
       0, 0
     } },
-    { "i", new int[] {
+    { 'i', new int[] {
       0, 1,
       1, 0,
       0, 0
     } },
-    { "j", new int[] {
+    { 'j', new int[] {
       0, 1,
       1, 1,
       0, 0
     } },
-    { "k", new int[] {
+    { 'k', new int[] {
       1, 0,
       0, 0,
       1, 0
     } },
-    { "l", new int[] {
+    { 'l', new int[] {
       1, 0,
       1, 0,
       1, 0
     } },
-    { "m", new int[] {
+    { 'm', new int[] {
       1, 1,
       0, 0,
       1, 0
     } },
-    { "n", new int[] {
+    { 'n', new int[] {
       1, 1,
       0, 1,
       1, 0
     } },
-    { "o", new int[] {
+    { 'o', new int[] {
       1, 0,
       0, 1,
       1, 0
     } },
-    { "p", new int[] {
+    { 'p', new int[] {
       1, 1,
       1, 0,
       1, 0
     } },
-    { "q", new int[] {
+    { 'q', new int[] {
       1, 1,
       1, 1,
       1, 0
     } },
-    { "r", new int[] {
+    { 'r', new int[] {
       1, 0,
       1, 1,
       1, 0
     } },
-    { "s", new int[] {
+    { 's', new int[] {
       0, 1,
       1, 0,
       1, 0
     } },
-    { "t", new int[] {
+    { 't', new int[] {
       0, 1,
       1, 1,
       1, 0
     } },
-    { "u", new int[] {
+    { 'u', new int[] {
       1, 0,
       0, 0,
       1, 1
     } },
-    { "v", new int[] {
+    { 'v', new int[] {
       1, 0,
       1, 0,
       1, 1
     } },
-    { "w", new int[] {
+    { 'w', new int[] {
       0, 1,
       1, 1,
       0, 1
     } },
-    { "x", new int[] {
+    { 'x', new int[] {
       1, 1,
       0, 0,
       1, 1
     } },
-    { "y", new int[] {
+    { 'y', new int[] {
       1, 1,
       0, 1,
       1, 1
     } },
-    { "z", new int[] {
+    { 'z', new int[] {
       1, 0,
       0, 1,
       1, 1
     } },
-    { " ", new int[] {
-      0, 0,
-      0, 0,
-      0, 0
-    } },
-    { ",", new int[] {
+    { ',', new int[] {
       0, 0,
       1, 0,
       0, 0
     } },
-    { ".", new int[] {
+    { '.', new int[] {
       0, 0,
       1, 1,
       0, 1
     } },
-    { "/", new int[] {
+    { '/', new int[] {
       0, 1,
       0, 0,
       1, 0
     } },
-    { ";", new int[] {
+    { ';', new int[] {
       0, 0,
       1, 0,
       1, 0
@@ -193,20 +193,20 @@ public class Mono {
     Colemak
   }
 
-  Dictionary<Layout, string[]> layouts = new Dictionary<Layout, string[]> {
-    { Layout.Colemak, new string[] {
-      "q", "w", "f", "p", "g", "j", "l", "u", "y", ";",
-      "a", "r", "s", "t", "d", "h", "n", "e", "i", "o",
-      "z", "x", "c", "v", "b", "k", "m", ",", ".", "/",
+  Dictionary<Layout, char[]> layouts = new Dictionary<Layout, char[]> {
+    { Layout.Colemak, new char[] {
+      'q', 'w', 'f', 'p', 'g', 'j', 'l', 'u', 'y', ';',
+      'a', 'r', 's', 't', 'd', 'h', 'n', 'e', 'i', 'o',
+      'z', 'x', 'c', 'v', 'b', 'k', 'm', ',', '.', '/',
     } },
-    { Layout.Qwerty, new string[] {
-      "q", "w", "e", "r", "t", "y", "u", "i", "o", "p",
-      "a", "s", "d", "f", "g", "h", "j", "k", "l", ";",
-      "z", "x", "c", "v", "b", "n", "m", ",", ".", "/",
+    { Layout.Qwerty, new char[] {
+      'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p',
+      'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';',
+      'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',
     } },
   };
 
-  public string KeyToChar(int index) {
+  public char KeyToChar(int index) {
     return layouts[Layout.Colemak][index];
   }
 
@@ -248,7 +248,7 @@ public class Mono {
     //   xi = 0;
     // }
     if (Input.Key(Key.Down).IsJustActive()) {
-      monoNet.value = 0;
+      monoNet.value = ' ';
       monoNet.send = true;
     }
 
@@ -267,7 +267,7 @@ public class Mono {
       if (index_i != last_index_i) {
         last_index_i = index_i;
         // Log.Info($"index_i: {index_i}");
-        monoNet.value = index_i;
+        monoNet.value = KeyToChar(index_i);
         monoNet.send = true;
       }
     }
@@ -295,10 +295,10 @@ public class Mono {
 
         int index = y * 10 + x;
         // string text = characters[index].character;
-        string keychar = KeyToChar(index);
+        char keychar = KeyToChar(index);
 
         Text.Add(
-          keychar,
+          keychar.ToString(),
           Matrix.TS(
             pos + V.XYZ(-0.3f, -0.3f, 0),
             V.XYZ(-1, -1, 0) * 8.0f
diff --git a/sk_demo/src/MonoNet.cs b/sk_demo/src/MonoNet.cs
index 0941db3..721e6bc 100644
--- a/sk_demo/src/MonoNet.cs
+++ b/sk_demo/src/MonoNet.cs
@@ -9,13 +9,13 @@ public class MonoNet {
   byte[] wData; int wHead;
 
   public bool send = true;
-  public int value = 0;
+  public char value = ' ';
 
 
   public MonoNet() {
 
     socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
-    string ip = "192.168.1.81";
+    string ip = "192.168.0.23";
 
     EndPoint serverEndPoint = new IPEndPoint(IPAddress.Parse(ip), 1234);
     socket.Connect(serverEndPoint);