On WordPress’s “themes” page (a selection of layouts for the wordpresser), the following layout titles are listed side-by-side:
Hemingway, of course, made the “iceberg principle” famous in his novel Death in the Afternoon:
If a writer of prose knows enough about what he is writing about he may omit things that he knows and the reader, if the writer is writing truly enough, will have a feeling of those things as strongly as though the writer had stated them. The dignity of movement of the iceberg is due to only one-eighth of it being above water. The writer who omits things because he does not know them only makes hollow places in his writing. (qtd. from LostGeneration.Com)
WordPress is probably offering an “in-joke.” I doubt I’m the first person to have “caught” this, but it’s a great bit of trivia regardless.