diff --git a/doc/bugs/indeterminite_preferred_content_state_for_duplicated_file/comment_7_fe9d7c70172fd104797b094b720aee18._comment b/doc/bugs/indeterminite_preferred_content_state_for_duplicated_file/comment_7_fe9d7c70172fd104797b094b720aee18._comment
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+++ b/doc/bugs/indeterminite_preferred_content_state_for_duplicated_file/comment_7_fe9d7c70172fd104797b094b720aee18._comment
@@ -0,0 +1,8 @@
+[[!comment format=mdwn
+ username="Ilya_Shlyakhter"
+ avatar="http://cdn.libravatar.org/avatar/1647044369aa7747829c38b9dcc84df0"
+ subject="comment 7"
+ date="2021-04-19T15:38:37Z"
+ content="""
+I guess, simplest to just say that preferred content expressions are predicates on files (as now), and a key is preferred if any file using the key is preferred.  Maybe clarify that in the docs?
+"""]]