diff --git a/hardware/BBB/144-analog-in.html b/hardware/BBB/144-analog-in.html
index 1b7b668e..4b47219b 100644
--- a/hardware/BBB/144-analog-in.html
+++ b/hardware/BBB/144-analog-in.html
@@ -14,7 +14,7 @@
   limitations under the License.
 -->
 
-<!-- Define the edit dialog -->
+<!-- Edit dialog for analogue-in -->
 <script type="text/x-red" data-template-name="analog-in">
    <div class="form-row">
        <label for="node-input-pin"><i class="icon-asterisk"></i>Input pin</label>
@@ -54,10 +54,11 @@
     </div>
 </script>
 
-<!-- Add help text -->
+<!-- Help text for analogue-in -->
 <script type="text/x-red" data-help-name="analog-in">
 <p>
-Analogue input for the Beaglebone Black. Reads an analogue pin when triggered
+Analogue input for the Beaglebone Black. Reads an analogue pin when triggered by
+a message.
 </p>
 <p>The output message topic is the node topic: the output message value is the
 scaled analogue input or NaN if a read error occurs.
@@ -74,7 +75,7 @@ voltage ten times in rapid succession for each input message and output the mean
 </p>
 </script>
 
-<!-- Register the node -->
+<!-- Register analogue-in node -->
 <script type="text/javascript">
     RED.nodes.registerType('analog-in', {
         category: 'advanced-input', // the palette category
diff --git a/hardware/BBB/144-analog-in.js b/hardware/BBB/144-analog-in.js
index e9ff8995..5c3ac8b7 100644
--- a/hardware/BBB/144-analog-in.js
+++ b/hardware/BBB/144-analog-in.js
@@ -24,7 +24,7 @@ try {
     require("util").log("[144-analog-in] Error: cannot find module 'bonescript'");
 }
 
-// The main node definition - most things happen in here
+// Node constructor for analogue-in
 function AnalogInputNode(n) {
     // Create a RED node
     RED.nodes.createNode(this, n);
@@ -40,8 +40,7 @@ function AnalogInputNode(n) {
     	this.averages = 1;
     }
 
-    // Define 'node' to allow us to access 'this' from within callbacks (the 'var' is essential -
-    // otherwise there is only one global 'node' for all instances of AnalogInputNode!)
+    // Define 'node' to allow us to access 'this' from within callbacks
     var node = this;
 
 	// Variables used for input averaging