Why editors still write in the margins

If you have ever had a manuscript come back covered in loops, squiggles and cryptic letters, you will know the feeling: someone has clearly improved your writing, but you cannot quite work out what they did. Proofreading marks are a shared shorthand that lets an editor say “move this”, “cut that” or “put it back” without rewriting your sentences. They save time, keep the page readable and stay remarkably consistent across publishing, public relations, law and academia.

Once you can read them, a marked-up document stops being intimidating and becomes a list of clear instructions. Here are the marks you are most likely to meet, what they mean, and how to work through them calmly.

Deleting, inserting and reshuffling words

These are the marks that change what the text actually says, so they tend to be the ones editors use most.

• Delete — a horizontal line struck through a letter, word or phrase, often with a small curled loop at one end. Everything under the line goes, including the space it occupied. If a whole sentence is struck through, the editor usually adds a closing mark in the margin to show exactly where the deletion ends.
• Insert — a caret (^) placed under the line, with the new text written above it or in the margin. The caret marks the precise point where the words should land, not the start of the sentence.
• Transpose — a curved line, rather like an elongated “S”, drawn between two letters or words that are the wrong way round. It means “swap these”. For longer passages, an editor may write “tr” in the margin instead.
• Stet — Latin for “let it stand”. Dots are placed under the text and “stet” is written in the margin, usually after a change has been reconsidered. It cancels a previous correction, so the original wording stays exactly as it was.

When several of these appear in one sentence, work left to right and finish each mark before moving on. Trying to hold three corrections in your head at once is how mistakes creep in.

Spacing, paragraphs and line breaks

Layout marks are easy to miss because they are small, but they shape how the reader experiences your writing.

• Close up — two curved lines drawn above and below the gap, like a pair of brackets lying on their sides. It means remove the space and join the words together.
• Insert space — a single vertical stroke or a “#” placed in the gap. The opposite of close up: a space is needed here.
• New paragraph — the pilcrow symbol (¶) written in the text and repeated in the margin. Start a fresh paragraph at that point, even if the sentence continues logically.
• Run on — the words “run on” or “no ¶” in the margin, meaning two short paragraphs should be joined into one.
• Indent and move left or move right — shown with small arrows or a stepped line, adjusting where the block of text sits.

If you are working in a word processor rather than on paper, translate these into paragraph breaks and spacing straight away. Leaving them until the end makes them far harder to spot.

Capitals, italics and type styles

Editors use single letters or short words in the margin to change how text looks without changing its wording.

• caps — set in capital letters, either the whole word or just the initial letter.
• lc — lower case, meaning a capital should be reduced to a small letter.
• ital — set in italics. On older typed manuscripts, a single underline meant the same thing.
• bf — bold face. A wavy underline is sometimes used for this in handwritten marking.
• rom or wf — roman (upright) type, or wrong font, telling you to strip out the italics or bold and match the surrounding text.

These marks often reveal house style rather than error. If you are unsure why a title has lost its italics, ask before you overrule it.

Spelling, punctuation and queries

Some marks are less about a firm instruction and more about starting a conversation.

“sp” in the margin, with a circled word, flags a spelling problem — sometimes a typo, sometimes a variant an editor wants you to check. A circle around a comma or full stop, with the correct mark written alongside, means the punctuation is wrong. A small question mark beside a word, or a query in the margin such as “ok?” or “meaning?”, is not a correction at all: it is the editor asking you to confirm a fact, a name or a turn of phrase.

Treat every query as a genuine question. Answer it in the margin, in a comment, or by changing the text — but never simply ignore it, because unanswered queries have a habit of surviving into print.

Working through a marked document

Start by reading the margin notes down the whole page before touching the text. That gives you the shape of the changes and stops you making a correction you later have to undo. Then work through the page in order, top to bottom, left to right, dealing with one mark at a time and ticking it off as you go.

Type up your corrections rather than editing over the marks, and read the revised sentence aloud afterwards. Marks fix mechanics; your ear catches the meaning. Where a mark is genuinely unclear, ask the person who made it — a thirty-second question is quicker than guessing and then unpicking the mess. Keep a personal key of the symbols you meet most often, and within a few documents the margins will read like plain English.