# Decorative symbol strings

Part of [The AI Tells Index](https://feedsquad.com/ai-tells). A tell signals low effort. It does not identify an author. Skilled writers produce every shape listed here, some of them daily, and automated detectors misread those writers for it at rates measured above 60 percent on non-native English prose. Nothing in this index proves that a machine wrote anything. Read an entry as one piece of evidence to weigh against the false-positive notes printed beside it.

## Facts

- Id: decorative-symbol-string
- Category: Formatting (formatting)
- Subcategory: decoration
- Also known as: arrow bullets, star string dividers, repeated exclamation emphasis
- Status: Active. Currently signals low-effort writing.
- Severity: low
- Evidence grade: primary-doc (platform policy, vendor documentation, or a model card)
- Languages: en
- Added: 2026-08-15
- Updated: 2026-08-15
- Page: https://feedsquad.com/ai-tells/decorative-symbol-string

## Description

Arrows, star strings and runs of punctuation carrying structure or emphasis that the sentences never earned.

## Why it reads as machine-written

Microsoft's advertising blog advises writers to keep punctuation plain and names arrows, star strings and long runs of punctuation as things that break machine parsing. That is advice with no data behind it and no ranking claim attached, so read it as one company's guidance rather than as a measurement. The reason the ornament reads as low effort is older than any of it. A symbol is faster to insert than a sentence that would justify the emphasis.

## Detection

Type: deterministic (a regular expression, run as written)

Scope: document

ECMAScript regular expression. The build validator compiles it and tests it against this entry's own specimens.

```regex
(?:(?:^|[ \t])(?:[\u2192\u21D2\u27A1\u2794\u25B6\u25BA]|[\u2605\u2606]{2,}))|[!?]{3,}
```

Flags: gm

## Examples

Constructed specimens. Written for this index. Never quoted from anyone's posts.

### Specimen 1

Before, exhibiting the tell:

> Three changes this week ★★★
> → faster exports
> → fewer timeouts
> → a new billing page
>
> Go and look!!!

After, repaired:

> Three changes this week. Exports on the largest accounts finished in 50 seconds against four minutes in June. Timeouts stopped once the job moved to a queue. The billing page now shows the next invoice date, which was the most common support question last quarter.

Note: Figures in this repair are invented for the specimen.

## False positives

Who legitimately writes this way.

Social marketers invented most of this ornament and still reach for it because the composer offers no formatting at all, so on Instagram and X an arrow is a workaround for a missing bullet list rather than a habit. Arrows are exact notation in writing about state machines, chemistry and sound change, where the glyph is the term. Star strings are how review sites render a rating. Judge by whether removing the symbol would cost the reader information: a rating loses its meaning without the stars, and a run of exclamation marks loses nothing at all.

## Model attribution

Unassigned. Microsoft's guidance is written for human copywriters and names no model, and no source this project read attributes arrows or star strings to a model family.

## Platform notes

- instagram: The caption field offers no formatting, so a symbol standing in for a bullet is a workaround for a product limitation before it is anything else.
- bing: Microsoft frames the advice around machine parsing for AI answers. It carries no ranking claim and no data, and this project cites it as advice.

## Sources

1. Microsoft Advertising, optimizing content for inclusion in AI search answers
   https://about.ads.microsoft.com/en/blog/post/october-2025/optimizing-your-content-for-inclusion-in-ai-search-answers
   (tier: vendor; accessed 2026-08-14)
2. Wikipedia: Signs of AI writing
   https://en.wikipedia.org/wiki/Wikipedia:Signs_of_AI_writing
   (tier: community; accessed 2026-08-14)

## Status history

Ids are permanent. A retired tell keeps its id and its page.

- 2026-08-15, Active: Active with low severity, because the human base rate on social surfaces is enormous. Microsoft names the same decorations in guidance written for human copywriters, which is a vendor recording the pattern without measuring it. The character class is narrow: arrow glyphs, runs of two or more stars, and three or more stacked exclamation or question marks. Regex verified on 2026-08-15 against its own specimen and three negatives.

## License

CC BY 4.0. https://creativecommons.org/licenses/by/4.0/

Attribution: The AI Tells Index, feedsquad.com/ai-tells

Reuse the data, including commercially. Keep the attribution line.

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Dataset version 1.0.0. Schema version 1.
Part of [FeedSquad](https://feedsquad.com). Built by [Herman Foundry](https://hermanfoundry.com) from Levi, Finnish Lapland.