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diff --git a/docs/code-quality/lint/linters/eslint-plugin-mozilla/valid-ci-uses.rst b/docs/code-quality/lint/linters/eslint-plugin-mozilla/valid-ci-uses.rst
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+valid-ci-uses
+=============
+
+Ensures that interface accesses on ``Ci`` are valid, and property accesses on
+``Ci.<interface>`` are also valid.
+
+This rule requires a full build to run, and is not turned on by default. To run
+this rule manually, use:
+
+.. code-block:: console
+
+    MOZ_OBJDIR=objdir-ff-opt ./mach eslint --rule="mozilla/valid-ci-uses: error" *
+
+Examples of incorrect code for this rule:
+-----------------------------------------
+
+``nsIFoo`` does not exist.
+
+.. code-block:: js
+
+    Ci.nsIFoo
+
+``UNKNOWN_CONSTANT`` does not exist on nsIURIFixup.
+
+.. code-block:: js
+
+    Ci.nsIURIFixup.UNKNOWN_CONSTANT
+
+Examples of correct code for this rule:
+---------------------------------------
+
+``nsIFile`` does exist.
+
+.. code-block:: js
+
+    Ci.nsIFile
+
+``FIXUP_FLAG_NONE`` does exist on nsIURIFixup.
+
+.. code-block:: js
+
+    Ci.nsIURIFixup.FIXUP_FLAG_NONE