diff --git a/EAR diagrams/FoodChain.eap b/EAR diagrams/FoodChain.eap
index 961ec32..c99f1ee 100644
Binary files a/EAR diagrams/FoodChain.eap and b/EAR diagrams/FoodChain.eap differ
diff --git a/src/main/java/cz/cvut/fel/sit/omo/foodchain/FoodChain.java b/src/main/java/cz/cvut/fel/sit/omo/foodchain/FoodChain.java
index 843d32b..798b7ed 100644
--- a/src/main/java/cz/cvut/fel/sit/omo/foodchain/FoodChain.java
+++ b/src/main/java/cz/cvut/fel/sit/omo/foodchain/FoodChain.java
@@ -19,11 +19,18 @@ import java.util.logging.Level;
 import java.util.logging.LogManager;
 import java.util.logging.Logger;
 
+/**
+ * Main application class
+ */
 public class FoodChain
 {
 
     private static FactoryManager factoryManager = new FactoryManager();
 
+    /**
+     * Main application method that parses configuration and starts Ticker.
+     * @param args args
+     */
     public static void main(String[] args)
     {
         LogManager.getLogManager().reset();
@@ -67,6 +74,12 @@ public class FoodChain
         return factoryManager;
     }
 
+    /**
+     * Provides connection between FoodChain and ConfigurationParser.
+     * @param path file path
+     * @param rootElementTag tag to be parsed
+     * @return parser result
+     */
     public static ParserResult parseDocument(String path, String rootElementTag)
     {
         try
@@ -82,6 +95,10 @@ public class FoodChain
         return ConfigurationParser.getElements(rootElementTag);
     }
 
+    /**
+     * Parses channels.
+     * @param path file path
+     */
     public static void parseChannels(String path)
     {
         ParserResult parserResult = parseDocument(path, "channel");
@@ -93,6 +110,10 @@ public class FoodChain
         }
     }
 
+    /**
+     * Parses nodes.
+     * @param path file path
+     */
     public static void parseNodes(String path)
     {
         ParserResult parserResult = parseDocument(path, "node");
@@ -104,6 +125,10 @@ public class FoodChain
         }
     }
 
+    /**
+     * Parses products.
+     * @param path file path
+     */
     public static void parseProducts(String path)
     {
         ParserResult parserResult = parseDocument(path, "product");
@@ -115,6 +140,10 @@ public class FoodChain
         }
     }
 
+    /**
+     * Parses scenarios.
+     * @param path file path
+     */
     public static void parseScenarios(String path)
     {
         ParserResult parserResult = parseDocument(path, "scenario");
diff --git a/src/main/java/cz/cvut/fel/sit/omo/foodchain/util/ReportLogger.java b/src/main/java/cz/cvut/fel/sit/omo/foodchain/util/ReportLogger.java
index f1b85b3..d5c31ff 100644
--- a/src/main/java/cz/cvut/fel/sit/omo/foodchain/util/ReportLogger.java
+++ b/src/main/java/cz/cvut/fel/sit/omo/foodchain/util/ReportLogger.java
@@ -4,8 +4,15 @@ import java.util.logging.Handler;
 import java.util.logging.Level;
 import java.util.logging.LogRecord;
 
+/**
+ * Custom Logger used for TransactionReport
+ */
 public class ReportLogger extends Handler
 {
+    /**
+     * Logs message and prints it out.
+     * @param record message to be printed
+     */
     @Override
     public void publish(LogRecord record) {
         StringBuilder sb = new StringBuilder();
diff --git a/src/main/java/cz/cvut/fel/sit/omo/foodchain/util/Singleton.java b/src/main/java/cz/cvut/fel/sit/omo/foodchain/util/Singleton.java
index ea49dbc..881809b 100644
--- a/src/main/java/cz/cvut/fel/sit/omo/foodchain/util/Singleton.java
+++ b/src/main/java/cz/cvut/fel/sit/omo/foodchain/util/Singleton.java
@@ -6,7 +6,7 @@ import java.util.HashMap;
 import java.util.Map;
 
 /**
- * Singleton implementation 1 of 3
+ * Singleton helper class
  */
 public class Singleton {