diff --git a/js/app/views/PlotComponents/plotFunction/Histogram.js b/js/app/views/PlotComponents/plotFunction/Histogram.js
index 3a3d366..addff8a 100644
--- a/js/app/views/PlotComponents/plotFunction/Histogram.js
+++ b/js/app/views/PlotComponents/plotFunction/Histogram.js
@@ -1,15 +1,21 @@
 Ext.define('amdaPlotComp.plotFunction.Histogram', {
-    extend: 'amdaPlotComp.plotFunction.BaseComponent',
-    title: "Histogram Arguments",
+    extend: 'amdaPlotComp.plotFunction.BaseComponent', // This class extends from amdaPlotComp.plotFunction.BaseComponent
+    title: "Histogram Arguments", // The title of this component
 
+    // Define the IDs for the function, bins, and xMin and xMax fields
     functionId: 'histo1d-function',
     binsId: 'histo1d-xbinnumber',
     xMinId: "histo1d-xmin",
     xMaxId: 'histo1d-xmax',
 
+    /**
+     * Initializes the component.
+     * It creates a combo box for selecting the density type and number fields for entering the xMin, xMax, and number of bins.
+     */
     initComponent: function () {
         const me = this;
 
+        // Define combo box store
         const comboStore = Ext.create('Ext.data.Store', {
             fields: ['label', 'value'],
             data: [
@@ -18,6 +24,7 @@ Ext.define('amdaPlotComp.plotFunction.Histogram', {
             ]
         });
 
+        // Create combo box for selecting the density type
         const densityTypeCombo = Ext.create('Ext.form.field.ComboBox', {
             fieldLabel: 'Density Type',
             name: me.functionId,
@@ -29,6 +36,7 @@ Ext.define('amdaPlotComp.plotFunction.Histogram', {
             value: 'density'
         });
 
+        // Add items to the component
         Ext.apply(me, {
             items: [
                 {
@@ -60,9 +68,14 @@ Ext.define('amdaPlotComp.plotFunction.Histogram', {
             ]
         });
 
+        // Call the parent class's initComponent method
         me.callParent(arguments);
     },
 
+    /**
+     * Retrieves the selected values from the combo box and number fields.
+     * Returns an object with properties set to these values.
+     */
     getValues: function () {
         const densityTypeCombo = this.query('[name=' + this.functionId + ']')[0];
         const densityTypeValue = densityTypeCombo.getValue();
--
libgit2 0.21.2