According to some technologists, including Dennis M. Kennedy, a lawyer and consultant based in St. Louis, (denniskennedy.com), metadata might include other bits of information like notes and questions rendered as “comments” within a document (“need to be more specific here,” for example, or in the case of my editors, “eh??”), or the deletions and insertions logged by such features as “track changes” in Microsoft Word.
“If you take the time to educate yourself a little and know the issues,” Mr. Kennedy said, “you can avoid problems pretty easily.”
With the Alito memo – which was distributed on a not-for-attribution basis, with no authors named – the D.N.C. was a little sloppy.