A little more doc

diff --git a/README.md b/README.md
index 2ffe5982e136c26a389583cc6f7f985a376e2219..3f0caa1e6b17d25c94cd4cd3b2b45a6120f3cc52 100644 (file)
--- a/README.md
+++ b/README.md
@@ -3791,7 +3791,9 @@ Default preferences can be modified by the user.
 
 If a value is locked, it is also set as the default.
 
 
 If a value is locked, it is also set as the default.
 

-User preferences persist across invocations of Firefox. It is the equivalent of a user setting the preference. They are most useful when a preference is needed very early in startup so it can't be set as a default by policy.
+User preferences persist across invocations of Firefox. It is the equivalent of a user setting the preference. They are most useful when a preference is needed very early in startup so it can't be set as default by policy.
+
+User preferences persist even if the policy is removed, so if you need to remove them, you should use the clear policy.

 
 See the examples below for more detail.
 
 
 See the examples below for more detail.