Bruce R. McConkie teaches that the JST translation items, chapter headings, Topic Guide, Bible Dictionary, footnotes, Gazeteer, and maps in the Scriptures are not perfect or determine doctrine.
Bruce R. McConkie, "The Bible: A Sealed Book," (1984) in Doctrines of the Restoration: Sermons and Writings of Bruce R. McConkie, ed. Mark McConkie (Salt Lake City: Bookcraft, 1989), 289-90
Key Ten: Use the Teaching Aids in Our New Editions of the Scriptures
I received a letter from a seminary teacher in which he criticized our new scriptural publications because they had footnotes, cross-references, and teaching aids. He argued that these were crutches which kept people form that intensive study in which they would make their own cross-references.
Well, I for one need these crutches and recommend them to you. They include the Joseph Smith Translation items, the chapter headings, Topical Guide, Bible Dictionary, footnotes, the Gazeteer, and the maps.
None of these are perfect; they do not of themselves determine doctrine; they have been and undoubtedly now are mistakes in them. Cross-references, for instance, do not establish and never were intended to prove that parallel passages so much as pertain to the same subject. They are aids and helps only. Certainly they rate a four or five in importance. Use them consistently.