diff --git a/config/default.js b/config/default.js
index 2e532ff39..1a07a9084 100644
--- a/config/default.js
+++ b/config/default.js
@@ -263,7 +263,7 @@ MathJax.Hub.Config({
     processEnvironments: true,
 
     //
-    //  Conteols whether tex2jax processes \ref{...} commands outside
+    //  Controls whether tex2jax processes \ref{...} commands outside
     //  of math mode.  Set to "false" to prevent processing of \ref
     //  except within math mode.
     //  
@@ -378,15 +378,19 @@ MathJax.Hub.Config({
     Macros: {},
     
     //
-    //  Equation numbering parameters
+    //  Equation numbering parameters.
+    //  
+    //  If you uncomment any of the format parameters, be sure to add
+    //  a comma after autoNumber, and be sure you don't have a comma
+    //  after the last uncommented format.
     //
     equationNumbers: {
-      autoNumber: "none",   // "AMS" for standard AMS environment numbering,
-                            //  or "all" to number all displayed equations
+      autoNumber: "none"   // "AMS" for standard AMS environment numbering,
+                           //  or "all" to number all displayed equations
 //    formatNumber: function (n) {return n},            // format for equation number n
 //    formatTag:    function (n) {return '('+n+')'},    // format for \tag and \eqref
 //    formatID:     function (n) {return 'mjx-eqn-'+n}, // element ID to use for reference
-//    formatURL:    function (n) {return '#mjx-eqn-'+escape(n)},  // URL to use for references
+//    formatURL:    function (n) {return '#mjx-eqn-'+escape(n)}   // URL to use for references
     }
     
   },
diff --git a/unpacked/config/default.js b/unpacked/config/default.js
index 2e532ff39..1a07a9084 100644
--- a/unpacked/config/default.js
+++ b/unpacked/config/default.js
@@ -263,7 +263,7 @@ MathJax.Hub.Config({
     processEnvironments: true,
 
     //
-    //  Conteols whether tex2jax processes \ref{...} commands outside
+    //  Controls whether tex2jax processes \ref{...} commands outside
     //  of math mode.  Set to "false" to prevent processing of \ref
     //  except within math mode.
     //  
@@ -378,15 +378,19 @@ MathJax.Hub.Config({
     Macros: {},
     
     //
-    //  Equation numbering parameters
+    //  Equation numbering parameters.
+    //  
+    //  If you uncomment any of the format parameters, be sure to add
+    //  a comma after autoNumber, and be sure you don't have a comma
+    //  after the last uncommented format.
     //
     equationNumbers: {
-      autoNumber: "none",   // "AMS" for standard AMS environment numbering,
-                            //  or "all" to number all displayed equations
+      autoNumber: "none"   // "AMS" for standard AMS environment numbering,
+                           //  or "all" to number all displayed equations
 //    formatNumber: function (n) {return n},            // format for equation number n
 //    formatTag:    function (n) {return '('+n+')'},    // format for \tag and \eqref
 //    formatID:     function (n) {return 'mjx-eqn-'+n}, // element ID to use for reference
-//    formatURL:    function (n) {return '#mjx-eqn-'+escape(n)},  // URL to use for references
+//    formatURL:    function (n) {return '#mjx-eqn-'+escape(n)}   // URL to use for references
     }
     
   },