diff --git a/client/galaxy/scripts/mvc/form/form-select-content.js b/client/galaxy/scripts/mvc/form/form-select-content.js
index 28ade6a3a50..6169c476e8e 100644
--- a/client/galaxy/scripts/mvc/form/form-select-content.js
+++ b/client/galaxy/scripts/mvc/form/form-select-content.js
@@ -2,9 +2,10 @@
 define(['utils/utils', 'mvc/ui/ui-misc', 'mvc/ui/ui-tabs', 'mvc/tools/tools-template'],
         function(Utils, Ui, Tabs, ToolTemplate) {
 
-
+// track current history elements
 history = {};
 
+// hda/hdca content selector ui element
 var View = Backbone.View.extend({
     // initialize
     initialize : function(app, options) {
@@ -251,12 +252,12 @@ var View = Backbone.View.extend({
         if (id_list === null) {
             return null;
         }
-        
+
         // transform into an array
         if (!(id_list instanceof Array)) {
             id_list = [id_list];
         }
-        
+
         // check if value exists
         if (id_list.length === 0) {
             return null;
@@ -331,7 +332,7 @@ var View = Backbone.View.extend({
         }
         return false;
     },
-    
+
     /** Batch message template */
     template_batch: function() {
         return  '<div class="ui-table-form-info">' +
diff --git a/client/galaxy/scripts/mvc/tools/tools-form-base.js b/client/galaxy/scripts/mvc/tools/tools-form-base.js
index cbfb0ebedf2..82036d177f2 100644
--- a/client/galaxy/scripts/mvc/tools/tools-form-base.js
+++ b/client/galaxy/scripts/mvc/tools/tools-form-base.js
@@ -1,5 +1,5 @@
 /**
-    This is the base class of the tool form plugin. It is referenced as 'app' in all lower level modules.
+    This is the base class of the tool form plugin. This class is e.g. inherited by the regular and the workflow tool form.
 */
 define(['utils/utils', 'utils/deferred', 'mvc/ui/ui-misc', 'mvc/form/form-view',
         'mvc/tools/tools-template', 'mvc/citation/citation-model', 'mvc/citation/citation-view'],
diff --git a/client/galaxy/scripts/mvc/tools/tools-form-workflow.js b/client/galaxy/scripts/mvc/tools/tools-form-workflow.js
index 9b9e1db1fd1..416a6fbac67 100644
--- a/client/galaxy/scripts/mvc/tools/tools-form-workflow.js
+++ b/client/galaxy/scripts/mvc/tools/tools-form-workflow.js
@@ -1,5 +1,5 @@
 /**
-    This is the main class of the tool form plugin. It is referenced as 'app' in all lower level modules.
+    This is the workflow tool form.
 */
 define(['utils/utils', 'mvc/tools/tools-form-base'],
     function(Utils, ToolFormBase) {
diff --git a/client/galaxy/scripts/mvc/tools/tools-form.js b/client/galaxy/scripts/mvc/tools/tools-form.js
index 2e94723cd3d..ceca4af4e16 100644
--- a/client/galaxy/scripts/mvc/tools/tools-form.js
+++ b/client/galaxy/scripts/mvc/tools/tools-form.js
@@ -1,5 +1,5 @@
 /**
-    This is the main class of the tool form plugin. It is referenced as 'app' in all lower level modules.
+    This is the regular tool form.
 */
 define(['utils/utils', 'mvc/ui/ui-misc', 'mvc/tools/tools-form-base', 'mvc/tools/tools-jobs'],
     function(Utils, Ui, ToolFormBase, ToolJobs) {
diff --git a/static/scripts/mvc/form/form-select-content.js b/static/scripts/mvc/form/form-select-content.js
index 28ade6a3a50..6169c476e8e 100644
--- a/static/scripts/mvc/form/form-select-content.js
+++ b/static/scripts/mvc/form/form-select-content.js
@@ -2,9 +2,10 @@
 define(['utils/utils', 'mvc/ui/ui-misc', 'mvc/ui/ui-tabs', 'mvc/tools/tools-template'],
         function(Utils, Ui, Tabs, ToolTemplate) {
 
-
+// track current history elements
 history = {};
 
+// hda/hdca content selector ui element
 var View = Backbone.View.extend({
     // initialize
     initialize : function(app, options) {
@@ -251,12 +252,12 @@ var View = Backbone.View.extend({
         if (id_list === null) {
             return null;
         }
-        
+
         // transform into an array
         if (!(id_list instanceof Array)) {
             id_list = [id_list];
         }
-        
+
         // check if value exists
         if (id_list.length === 0) {
             return null;
@@ -331,7 +332,7 @@ var View = Backbone.View.extend({
         }
         return false;
     },
-    
+
     /** Batch message template */
     template_batch: function() {
         return  '<div class="ui-table-form-info">' +
diff --git a/static/scripts/mvc/tools/tools-form-base.js b/static/scripts/mvc/tools/tools-form-base.js
index cbfb0ebedf2..82036d177f2 100644
--- a/static/scripts/mvc/tools/tools-form-base.js
+++ b/static/scripts/mvc/tools/tools-form-base.js
@@ -1,5 +1,5 @@
 /**
-    This is the base class of the tool form plugin. It is referenced as 'app' in all lower level modules.
+    This is the base class of the tool form plugin. This class is e.g. inherited by the regular and the workflow tool form.
 */
 define(['utils/utils', 'utils/deferred', 'mvc/ui/ui-misc', 'mvc/form/form-view',
         'mvc/tools/tools-template', 'mvc/citation/citation-model', 'mvc/citation/citation-view'],
diff --git a/static/scripts/mvc/tools/tools-form-workflow.js b/static/scripts/mvc/tools/tools-form-workflow.js
index 9b9e1db1fd1..416a6fbac67 100644
--- a/static/scripts/mvc/tools/tools-form-workflow.js
+++ b/static/scripts/mvc/tools/tools-form-workflow.js
@@ -1,5 +1,5 @@
 /**
-    This is the main class of the tool form plugin. It is referenced as 'app' in all lower level modules.
+    This is the workflow tool form.
 */
 define(['utils/utils', 'mvc/tools/tools-form-base'],
     function(Utils, ToolFormBase) {
diff --git a/static/scripts/mvc/tools/tools-form.js b/static/scripts/mvc/tools/tools-form.js
index 2e94723cd3d..ceca4af4e16 100644
--- a/static/scripts/mvc/tools/tools-form.js
+++ b/static/scripts/mvc/tools/tools-form.js
@@ -1,5 +1,5 @@
 /**
-    This is the main class of the tool form plugin. It is referenced as 'app' in all lower level modules.
+    This is the regular tool form.
 */
 define(['utils/utils', 'mvc/ui/ui-misc', 'mvc/tools/tools-form-base', 'mvc/tools/tools-jobs'],
     function(Utils, Ui, ToolFormBase, ToolJobs) {