A little more doc

[policy-templates.git] / README.md

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@@ -3787,9 +3787,13 @@ Using the preference as the key, set the `Value` to the corresponding preference
 
 `Status` can be "default", "locked", "user" or "clear"
 
+Default preferences can be modified by the user.
+
 If a value is locked, it is also set as the default.
 
-User preferences persist across invocations of Firefox.
+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.