diff --git a/README.md b/README.md
index 1dd384d..1e7997b 100644
--- a/README.md
+++ b/README.md
@@ -6,13 +6,16 @@ Version 2.0 brings support for PythonMagick (ImageMagick Library) that allows to
 ## OS Support
 WRP works on macOS (Mac OS X), Linux and FreeBSD. On macOS it uses Cocoa Webkit, on Linux/FreeBSD QT Webkit, for which needs PyQT4 or PyQT5.
 
-# Installation
+## Installation
 * macOS - should just work
 * Linux/FreeBSD install `python-pyqt5.qtwebkit`
 
 ## Configuration
 Edit wrp.py, scroll past Copyright nonsense to find config parameters
 
+## Usage 
+Configure your web browser to use HTTP proxy at IP address and port where WRP is running. If using browsers prior to HTML 3.2, ISMAP option may need to be enabled. Check configuration.
+
 ## More info and screenshots
 * http://virtuallyfun.superglobalmegacorp.com/2014/03/11/web-rendering-proxy-update/
 * http://virtuallyfun.superglobalmegacorp.com/2014/03/03/surfing-modern-web-with-ancient-browsers/