How to write journal highlights: 85 characters, results first.

Highlights are three to five short bullet points that state your paper's main findings, submitted as a separate file next to the manuscript. At Elsevier, the publisher that runs the feature, each bullet is capped at 85 characters including spaces, and the bullets are meant to carry the novel results of the study rather than a recap of its methods. Write one finding per bullet, put the result at the front, and confirm your target journal asks for highlights before you spend an afternoon on them.

Which journals require highlights, and where do they show up?

Highlights are an Elsevier feature, required at some of its journals and optional at others. Most journals outside Elsevier do not use them at all, so the first move is to read the Guide for Authors for the exact title you are submitting to.

When a journal does use them, the highlights do not sit inside the PDF. Elsevier displays them in the online search result list, in the contents list, and on the article's web page, but not in the PDF or the print version. That placement is the point. The bullets are the first prose an editor or a browsing reader meets, ahead of the title in some views and well ahead of the abstract. You submit them as a separate editable file with the word "highlights" in the filename, not pasted into the manuscript. An afterthought pasted in at 2 a.m. reads like one. A clean set belongs on your first-submission checklist alongside the cover letter and the data statement.

How long can each highlight bullet be?

Each highlight can be no more than 85 characters, including spaces, and you get three to five bullets in total. Cell Press journals ask for three to four instead.

Eighty-five characters is short. It is about a dozen words, one tight clause, no subordinate windup. The submission system counts the characters for you and refuses anything over the limit, so the cap is not a suggestion you can push past the way you might nudge a word count. Punctuation and spaces both count. A bullet that says something at 84 characters is doing more work than a padded one at the same length, and the difference is usually a verb and a number where the padding was.

What belongs in a highlight, and what does not?

A result. Each bullet should state one finding as an outcome, led by what you learned, not by what you did to learn it. Elsevier's own instruction is that highlights "capture the novel results of your research as well as new methods that were used during the study (if any)."

Read that "if any" closely. Methods earn a bullet only when the method itself is the novel contribution. For most papers the novelty is in the findings, so most of your bullets should be findings. Put the number in. "Yield fell 24%" tells a skimming reader more than "yield was affected," and it fits the same character budget. Direction, magnitude, and the thing that moved: that is a highlight. This is the discipline the abstract word limit already forces on you, compressed harder. The abstract has room for context and method. The highlight does not.

One finding per bullet. If a bullet contains an "and" joining two separate results, split it or cut one. A list where each line carries exactly one idea scans faster than a list where two lines carry three ideas between them.

Which mistakes make highlights unusable?

Two mistakes recur: dumping methods, and writing claims too vague to check. Both spend a scarce character budget on words that tell the reader nothing.

The methods dump reads like a sentence lifted straight from your protocol. "A field experiment was conducted to study maize under drought conditions" is 72 characters describing what you did, with no finding anywhere in it. A reader learns the topic and nothing about the outcome. The vague claim is subtler. "Results have important implications for policy" is grammatical, fits the cap, and says nothing a reader can act on. Which results, which policy, in which direction. If a bullet would be true of a hundred other papers, it is not a highlight.

Three smaller errors round out the list. Repeating your title word for word wastes a bullet. Splitting one finding across two bullets to fill the quota reads as padding. Running over 85 characters gets the file bounced back before an editor sees it, the same way a format slip can set up a desk rejection you could have seen coming.

Before and after: rewriting a weak highlight

Start with the finding, add the number, cut the windup. A weak bullet describes the study. A strong one reports what the study found.

Take a weak first bullet: "In this paper we investigate the effect of drought on maize crops." That is 65 characters of setup. It names the topic and the study but reports no result, and it opens with "In this paper we," which the reader already assumes. Rewritten around the finding: "Drought cut maize yield by 24% across three growing seasons." That is 59 characters, under the cap, and it leads with the outcome. A reader scanning the contents list now knows what you found, not merely what you looked at.

Do the same for each bullet. Draft the finding as a plain sentence first, then trim it to the cap by cutting the framing rather than the result. If trimming forces you to drop the number to fit, drop a different word instead. The number is the part a reader remembers. When Waraq reviews a manuscript against a journal's rule set, an over-length or result-free highlight gets flagged against that journal's own guidance, so the note names the 85-character cap rather than a vague suggestion to tighten. Write the findings first, cut to length second, and the highlights read like results instead of a table of contents.