diff --git a/comms.ino b/comms.ino
index 8d9d22af..29e69975 100644
--- a/comms.ino
+++ b/comms.ino
@@ -110,6 +110,45 @@ void sendValues(int length)
 void receiveValue(byte offset, byte newValue)
 {
   
+  byte* pnt_configPage;
+
+  switch (currentPage) 
+  {
+      case vePage:
+        pnt_configPage = (byte *)&configPage1;
+        if (offset < 64) //New value is part of the fuel map
+        {
+          
+        }
+        else if (offset < 80) //New value is one of the X or Y axis bins
+        {
+          
+        }
+        else //New value is one of the remaining config items
+        {
+          *(pnt_configPage + offset) = newValue;
+        }
+        break;
+        
+      case ignPage: //Ignition settings page (Page 2)
+        pnt_configPage = (byte *)&configPage2;
+        if (offset < 64) //New value is part of the ignition map
+        {
+          
+        }
+        else if (offset < 80) //New value is one of the X or Y axis bins
+        {
+          
+        }
+        else //New value is one of the remaining config items
+        {
+          *(pnt_configPage + offset) = newValue;
+        }
+        break;
+      
+      default:
+	break;
+  }
 }
 
 void saveConfig()
@@ -119,7 +158,7 @@ void saveConfig()
 
 void sendPage()
 {
-  byte response[125];
+  byte response[page_size];
   byte offset;
   byte* pnt_configPage;
   
@@ -135,7 +174,7 @@ void sendPage()
         //All other bytes can simply be copied from the config table
         pnt_configPage = (byte *)&configPage1; //Create a pointer to Page 1 in memory
         offset = 80; //Offset is based on the amount already copied above (table + bins)
-        for(byte x=offset;x<125;x++)
+        for(byte x=offset; x<page_size; x++)
         { 
           response[offset] = *(pnt_configPage + offset + x); //Each byte is simply the location in memory of configPage1 + the offset + the variable number (x)
         }
@@ -177,7 +216,7 @@ void sendPage()
         response[124] = 0;
         */
 
-        Serial.write((uint8_t *)&response, sizeof(response));
+        Serial.write((byte *)&response, sizeof(response));
         break;
         
       case ignPage:
@@ -187,9 +226,9 @@ void sendPage()
         for(byte y=72;y<80;y++) { response[y] = ignitionTable.axisY[7-(y-72)]; }
         
         //All other bytes can simply be copied from the config table
-        pnt_configPage = (byte *)&configPage2; //Create a pointer to Page 1 in memory
+        pnt_configPage = (byte *)&configPage2; //Create a pointer to Page 2 in memory
         offset = 80; //Offset is based on the amount already copied above (table + bins)
-        for(byte x=offset;x<125;x++)
+        for(byte x=offset; x<page_size; x++)
         { 
           response[offset] = *(pnt_configPage + offset + x); //Each byte is simply the location in memory of configPage + the offset + the variable number (x)
         }
diff --git a/globals.h b/globals.h
index c6107dcf..5eb69674 100644
--- a/globals.h
+++ b/globals.h
@@ -1,7 +1,8 @@
 #include <Arduino.h>
 
-byte ms_version = 20;
-byte data_structure_version = 1; //This identifies the data structure when reading / writing. 
+const byte ms_version = 20;
+const byte data_structure_version = 1; //This identifies the data structure when reading / writing. 
+const byte page_size = 125;
 
 //The status struct contains the current values for all 'live' variables
 //In current version this is 64 bytes
@@ -27,9 +28,9 @@ struct config1 {
   byte engineDwell; 3000 //The spark dwell time in uS
   */
   
-  byte crankCold;
-  byte crankHot;
-  byte asePct;
+  byte crankCold; //Cold cranking pulsewidth modifier. This is added to the fuel pulsewidth when cranking under a certain temp threshold (ms)
+  byte crankHot; //Warm cranking pulsewidth modifier. This is added to the fuel pulsewidth when cranking (ms)
+  byte asePct; //Afterstart enrichment (%)
   byte aseCount; //Afterstart enrichment cycles. This is the number of ignition cycles that the afterstart enrichment % lasts for
   byte wueBins[10]; //Warm up enrichment array (10 bytes)
   byte taeBins1; //TPS based acceleration enrichment bin 1 of 4 (ms)
@@ -57,10 +58,10 @@ struct config1 {
   byte mapType;
   byte strokes;
   byte injType;
-  byte nCylinders;
+  byte nCylinders; //Number of cylinders
   byte cltType;
   byte matType;
-  byte nInjectors;
+  byte nInjectors; //Number of injectors
   byte engineType;
   byte egoType;
   byte algorithm; //"Speed Density", "Alpha-N"
diff --git a/storage.h b/storage.h
index b412b495..1d62d176 100644
--- a/storage.h
+++ b/storage.h
@@ -7,7 +7,7 @@ void loadConfig();
 void loadTables();
 
 /*
-Current layout of data (Version 1) is as follows (All sizes are in bytes):
+Current layout of EEPROM data (Version 1) is as follows (All sizes are in bytes):
 |---------------------------------------------------|
 |Byte # |Size | Description                         |
 |---------------------------------------------------|