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+#### Filter lists
+
+##### Ordering of filters
+
+New filter must be added at the end of the list.
+
+The reason is to provide an easy way to check whether a filter is still relevant. The filters at the top of the file will be the oldest filters, and also the most likely to maybe be obsolete.
+
+Old filters which are confirmed to still be required must be moved to the end of the list.
+
+##### Issue number association
+
+**All** added filters must be associated with a formal issue number, example:
+
+    ! https://github.com/uBlockOrigin/uAssets/issues/2
+    ||data.inertanceretinallaurel.com^
+
+This way this documents why a filter was added, and how to verify whether an old filter is still needed. The comment line preceding the filter(s) to solve a specific issue should be only a URL to the issue. The issue itself can contains all the details about how the issue was solved, and why it was solved this way, etc.
+
+##### Commit message
+
+Keep it simple, example: `this fixes #2`. The issue itself will contains all the details.