So far, two responses to George's remarks. OK, so there's not much dispute about this, though still quibbles over the best terminology. Here are Syd's thoughts on the possibility of having separate files containing the introductory material.
Summaries clutter up a definition dictionary.
Updating summaries MAY also be simpler for the same reason. OK, I just wanted to focus on what I see as the central issue here. Perhaps I am wrong. I could be persuaded either way on this subject. I believe that they way we are currently proceeding is correct.