diff --git a/lib/index.js b/lib/index.js
index adb64ed..6838903 100755
--- a/lib/index.js
+++ b/lib/index.js
@@ -2,27 +2,48 @@
 
 const xml = require('xml');
 
-function ifTruePush(bool, array, data) {
-    if (bool) {
+/**
+ * Check first argument. If true - push last argument to second argument
+ * @param condition
+ * @param array
+ * @param data
+ */
+function ifTruePush(condition, array, data) {
+    if (condition) {
         array.push(data);
     }
 }
 
-function generateXML(data) {
-
-    let channel = [];
-
-    channel.push({title: {_cdata: data.title}});
-    channel.push({link: data.link || 'http://github.com/LightAir/turbo-rss'});
-    channel.push({description: {_cdata: data.description || data.title}});
-    channel.push({language: 'ru'});
-
-    data.items.forEach(function (item) {
+/**
+ * @param related
+ * @param itemValues
+ */
+function addRelated(related, itemValues) {
+    ifTruePush(related, itemValues, {
+        'yandex:related': related.map(
+            function (rel) {
+                return {
+                    link: [{
+                        _attr: {
+                            'url': rel.link,
+                            'img': rel.image_url
+                        }
+                    }, rel.text]
+                };
+            }
+        )
+    });
+}
 
+/**
+ * Items processing
+ * @param items
+ * @param channel
+ */
+function items(items, channel) {
+    items.forEach(function (item) {
         let item_values = [];
-
         item_values.push({_attr: {'turbo': 'true'}});
-
         item_values.push({link: item.url});
         item_values.push({'turbo:source': item.url});
 
@@ -45,24 +66,27 @@ function generateXML(data) {
         item_values.push({'turbo:content': {_cdata: fullContent}});
 
         if (typeof item.related !== 'undefined') {
-            ifTruePush(item.related, item_values, {
-                'yandex:related': item.related.map(
-                    function (related) {
-                        return {
-                            link: [{
-                                _attr: {
-                                    'url': related.link,
-                                    'img': related.image_url
-                                }
-                            }, related.text]
-                        };
-                    }
-                )
-            });
+            addRelated(item.related, item_values);
         }
 
         channel.push({item: item_values});
     });
+}
+
+/**
+ * @param data
+ * @returns {{rss: *[]}}
+ */
+function generateXML(data) {
+
+    let channel = [];
+
+    channel.push({title: {_cdata: data.title}});
+    channel.push({link: data.link || 'http://github.com/LightAir/turbo-rss'});
+    channel.push({description: {_cdata: data.description || data.title}});
+    channel.push({language: 'ru'});
+
+    items(data.items, channel);
 
     let _attr = {
         'xmlns:yandex': 'http://news.yandex.ru',
@@ -79,6 +103,12 @@ function generateXML(data) {
     };
 }
 
+/**
+ * Base function
+ * @param options
+ * @param items
+ * @constructor
+ */
 function YTurbo(options, items) {
     options = options || {};
 
@@ -87,18 +117,18 @@ function YTurbo(options, items) {
     this.link = options.link;
     this.items = items || [];
 
-    this.item = function (options) {
-        options = options || {};
+    this.item = function (data) {
+        data = data || {};
         let item = {
-            title: options.title || 'No title',
-            description: options.description || '',
-            image_url: options.image_url,
-            url: options.url,
-            author: options.author,
-            date: options.date || options.pubDate,
-            content: options.content,
-            menu: options.menu,
-            related: options.related
+            title: data.title || 'No title',
+            description: data.description || '',
+            image_url: data.image_url,
+            url: data.url,
+            author: data.author,
+            date: data.date || data.pubDate,
+            content: data.content,
+            menu: data.menu,
+            related: data.related
         };
 
         this.items.push(item);
diff --git a/Лист ознакомления.doc b/Лист ознакомления.doc
new file mode 100644
index 0000000..3fcff78
Binary files /dev/null and b/Лист ознакомления.doc differ