diff --git a/src/main/java/edu/ycp/cs/dh/acegwt/client/ace/AceCommandArgs.java b/src/main/java/edu/ycp/cs/dh/acegwt/client/ace/AceCommandArgs.java
index 03e4305..373cd91 100644
--- a/src/main/java/edu/ycp/cs/dh/acegwt/client/ace/AceCommandArgs.java
+++ b/src/main/java/edu/ycp/cs/dh/acegwt/client/ace/AceCommandArgs.java
@@ -11,7 +11,9 @@ public class AceCommandArgs {
 	private final Object value;
 	
 	/**
-	 * Create map argument. In case <code>data</code> is null map will be empty.
+	 * Create map argument. In case param data is null map will be empty.
+	 *
+	 * @param data map
 	 */
 	public AceCommandArgs(Map<String, String> data) {
 		value = JavaScriptObject.createObject();
@@ -22,6 +24,8 @@ public class AceCommandArgs {
 	
 	/**
 	 * Create text argument.
+	 * 
+	 * @param value text argument
 	 */
 	public AceCommandArgs(String value) {
 		this.value = value;
@@ -29,8 +33,10 @@ public class AceCommandArgs {
 	
 	/**
 	 * Add key-value pair to map.
-	 * @param argName
-	 * @param argValue
+	 *
+	 * @param argKey key
+	 * @param argValue value
+	 * @return
 	 */
 	public native AceCommandArgs with(String argKey, String argValue) /*-{
 		this.@edu.ycp.cs.dh.acegwt.client.ace.AceCommandArgs::value[argKey] = argValue;
diff --git a/src/main/java/edu/ycp/cs/dh/acegwt/client/ace/AceCommandLineListener.java b/src/main/java/edu/ycp/cs/dh/acegwt/client/ace/AceCommandLineListener.java
index b7f4587..a696396 100644
--- a/src/main/java/edu/ycp/cs/dh/acegwt/client/ace/AceCommandLineListener.java
+++ b/src/main/java/edu/ycp/cs/dh/acegwt/client/ace/AceCommandLineListener.java
@@ -6,7 +6,8 @@ package edu.ycp.cs.dh.acegwt.client.ace;
 public interface AceCommandLineListener {
 	/**
 	 * Notify subscriber (e.g. editor) that command was entered.
-	 * @param command
+	 * 
+	 * @param command that command was entered
 	 */
 	public void onCommandEntered(String command);
 }
diff --git a/src/main/java/edu/ycp/cs/dh/acegwt/client/ace/AceEditor.java b/src/main/java/edu/ycp/cs/dh/acegwt/client/ace/AceEditor.java
index eff93a9..7c5b0b2 100644
--- a/src/main/java/edu/ycp/cs/dh/acegwt/client/ace/AceEditor.java
+++ b/src/main/java/edu/ycp/cs/dh/acegwt/client/ace/AceEditor.java
@@ -167,7 +167,7 @@ public class AceEditor extends Composite implements RequiresResize, HasText, Tak
         /**
          * Enable a worker for the current session.
          *
-         * @param userWorker true to enable a worker otherwise false
+         * @param useWorker true to enable a worker otherwise false
          */
         public native void setUseWorker(boolean useWorker) /*-{
                 var editor = this.@edu.ycp.cs.dh.acegwt.client.ace.AceEditor::editor;
@@ -495,7 +495,7 @@ public class AceEditor extends Composite implements RequiresResize, HasText, Tak
 	/**
 	 * Execute a command with arguments (in case args is not null). 
 	 * @param command one word command
-	 * @param args command argument
+	 * @param arg command argument
 	 */
 	public void execCommand(String command, String arg) {
 		execCommandHidden(command, arg);