diff --git a/web/gui/src/main/webapp/tests/README.txt b/web/gui/src/main/webapp/tests/README.txt
index 68837f4..213b484 100644
--- a/web/gui/src/main/webapp/tests/README.txt
+++ b/web/gui/src/main/webapp/tests/README.txt
@@ -13,3 +13,19 @@
 
 The configuration is currently set to re-run the tests every time a
 file change is detected, (i.e. each time a source file is saved).
+
+----------------------------------------------------------------------
+Useful Notes
+============
+
+Set a 'breakpoint' with the debugger command:
+
+    it('should define four functions', function () {
+        debugger;
+
+        expect(fs.isF(gs.init)).toBeTruthy();
+        // ...
+    });
+
+Open Developer Tools in the captured Chrome browser, and reload the page.
+The debugger will break at the given point, allowing you to inspect context.