For a new edition of a 1953 book on architectural theory and history, we've made many annotations in the form of editor side notes alongside the main text, rather than as footnotes. The question concerns the writing style of the notes, specifically a truncated sentence structure/style. The notes are intended to be as short as possible and the temptation is very much to abbreviate formal sentence structure. I've waited this long, however, to address this in terms of any CMOS view on this shortened writing style. Here are three examples where figures briefly mentioned in the body text are briefly expanded upon:
Hugo de Vries (1848–1935), Dutch botanist, introduced concept of genes and mutation in evolution. [Note added this edition.]
Cesare Lombroso (1835–1909), Italian criminologist whose views brought a shift to scientific study of criminals. [Note added this edition.]
Wilhelm Maximilian Wundt (1832–1920), German physician, philosopher. Critical catalyst for the author's immersion in research on the senses. [Note added this edition.]
This isn't formally correct grammar, but is it permitted in this context and are there any guidelines to this? General thoughts? With a hundred such side notes, it's certain that, as always, consistency is key, so if a truncated style is employed most of the time, it should become the case throughout.