diff --git a/Testing.md b/Testing.md
index 30a9181..dee84a9 100644
--- a/Testing.md
+++ b/Testing.md
@@ -9,6 +9,8 @@ Manual Tests
 The manual test pages take the form of HTML files (although some of the HTML files are used for running
 Mocha tests -- see below).  They can be run by simply opening them up in a web browser and interacting with them.
 
+The goal is that the HTML files should be self-explanatory and any instructions for how to run the test should be included in the page itself.
+
 Automatic Tests
 ---------------