diff --git a/.vscode/extensions.json b/.vscode/extensions.json
new file mode 100644
index 0000000..109ee73
--- /dev/null
+++ b/.vscode/extensions.json
@@ -0,0 +1,3 @@
+{
+  "recommendations": ["zxh404.vscode-proto3"]
+}
diff --git a/mesh.proto b/mesh.proto
index f5e487a..d96b557 100644
--- a/mesh.proto
+++ b/mesh.proto
@@ -146,10 +146,14 @@ message Routing {
 
     TIMEOUT = 3;
 
-    /* No suitable interface could be found for delivering this packet */
+    /*
+    * No suitable interface could be found for delivering this packet
+    */
     NO_INTERFACE = 4;
 
-    /* We reached the max retransmission count (typically for naive flood routing) */
+    /*
+      * We reached the max retransmission count (typically for naive flood routing)
+      */
     MAX_RETRANSMIT = 5;
   }
 
@@ -831,9 +835,9 @@ message RadioConfig {
      */
     bool debug_log_enabled = 101;
 
-    /**
-    How our location is shared with other nodes (or the local phone)
-    */
+    /*
+     * How our location is shared with other nodes (or the local phone)
+     */
     LocationSharing location_share = 32;
 
     /*
@@ -872,11 +876,11 @@ message RadioConfig {
      */
     repeated uint32 ignore_incoming = 103;
     
-    /**
-    Preferences for the SerialPlugin
-    
-    FIXME - Move this out of UserPreferences and into a section for plugin configuration.
-    */
+    /*
+     * Preferences for the SerialPlugin
+     *
+     * FIXME - Move this out of UserPreferences and into a section for plugin configuration.
+     */
     bool serialplugin_enabled = 120;
     bool serialplugin_echo = 121;
     uint32 serialplugin_rxd = 122;
@@ -884,11 +888,11 @@ message RadioConfig {
     uint32 serialplugin_timeout = 124;
     uint32 serialplugin_mode = 125;
 
-    /**
-    Preferences for the ExternalNotificationPlugin
-    
-    FIXME - Move this out of UserPreferences and into a section for plugin configuration.
-    */
+    /*
+     * Preferences for the ExternalNotificationPlugin
+     *
+     * FIXME - Move this out of UserPreferences and into a section for plugin configuration.
+     */
     bool ext_notification_plugin_enabled = 126;
     uint32 ext_notification_plugin_output_ms = 127;
     uint32 ext_notification_plugin_output = 128;
@@ -896,20 +900,20 @@ message RadioConfig {
     bool ext_notification_plugin_alert_message = 130;
     bool ext_notification_plugin_alert_bell = 131;
 
-    /**
-    Preferences for the RangeTestPlugin
-    
-    FIXME - Move this out of UserPreferences and into a section for plugin configuration.
-    */
+    /*
+     * Preferences for the RangeTestPlugin
+     *
+     * FIXME - Move this out of UserPreferences and into a section for plugin configuration.
+     */
     bool range_test_plugin_enabled = 132;
     uint32 range_test_plugin_sender = 133;
     bool range_test_plugin_save = 134;
 
-    /**
-    Preferences for the StoreForwardPlugin
-    
-    FIXME - Move this out of UserPreferences and into a section for plugin configuration.
-    */
+    /*
+     * Preferences for the StoreForwardPlugin
+     *
+     * FIXME - Move this out of UserPreferences and into a section for plugin configuration.
+     */
     bool store_forward_plugin_enabled = 136;
     uint32 store_forward_plugin_records = 137;
   }
@@ -989,7 +993,7 @@ message NodeInfo {
   uint32 next_hop = 5;
 }
 
-/** Error codes for critical errors
+/* Error codes for critical errors
  * 
  * The device might report these fault codes on the screen.  If you encounter a fault code, please
  * post on the meshtastic.discourse.group and we'll try to help.
diff --git a/portnums.proto b/portnums.proto
index 889174d..98714f7 100644
--- a/portnums.proto
+++ b/portnums.proto
@@ -119,6 +119,13 @@ enum PortNum {
      */
     RANGE_TEST_APP = 66;
 
+    /*
+     * Provides a format to send and receive environmental data from the Meshtastic network.
+     *
+     * Maintained by Charles Crossan (crossan007) : crossan007@gmail.com
+     */
+     ENVIRONMENTAL_MEASUREMENT_APP = 67;
+
     /*
      * Private applications should use portnums >= 256.
      * To simplify initial development and testing you can use "PRIVATE_APP"