diff --git a/CHANGELOG.md b/CHANGELOG.md
index b45c8c2..9336e10 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,14 @@
+# 3.0.0 (2017-11-22) #
+
+- Refactoring by Azzurite
+    - control.bat now takes up to three command-line arguments
+        1. web browser to use to open the webpage
+        1. IP address of the camera
+        1. IP mask of the camera
+        
+        all of the arguments are optional
+    - Threaded execution        
+
 # 2.0.0 (2016-09-18) #
 
 - The first version of peci1's fork.
diff --git a/Control.bat b/Control.bat
index 0411e15..c2ad1bd 100644
--- a/Control.bat
+++ b/Control.bat
@@ -1,4 +1,4 @@
-rem Usage: 
+rem Usage: Control.bat [browser [camera_ip [camera_ip_mask]]] 
 rem     Control.bat (opens the page in Internet Explorer, asks for IP address and network mask of the camera)
 rem     Control.bat firefox (opens the page in firefox, asks for IP address and network mask of the camera)
 rem     Control.bat firefox 192.168.0.1 (opens the page in firefox, doesn't ask for anything, assumes network mask /24)