Guides
What is actually known about AI text watermarking, invisible unicode, and the punctuation that gives machine writing away.
Claude's Watermark, One Month Later
Anthropic's mechanism is now confirmed as SynthID Text, bypass tools appeared within a day, new research undermines its forensic reliability, and the EU quietly extended its own deadline.
27 August 2026 · by James Whitfield
Em Dash vs En Dash vs Hyphen
The difference between the em dash, en dash and hyphen, when to use each, and how to type them on Mac and Windows.
13 August 2026 · by James Whitfield
How to Type an Em Dash (—)
Every em dash shortcut: Mac (Option+Shift+-), Windows (Alt+0151), Word, Google Docs, iPhone, Linux and HTML.
13 August 2026 · by James Whitfield
Why Does AI Use So Many Em Dashes?
ChatGPT and Claude overuse the em dash badly. The real reason it happens, why it signals AI writing, and how to fix it.
13 August 2026 · by James Whitfield
Does ChatGPT Watermark Its Text?
OpenAI built a ChatGPT text watermark and never shipped it. What is confirmed, what is myth, and how to check your text.
13 August 2026 · by James Whitfield
Does Claude Watermark Its Text?
Since August 2026 Claude embeds a watermark in all generated text, worldwide. What it is, what it proves, what removes it.
13 August 2026 · by James Whitfield
Invisible Unicode Characters Explained
A reference to invisible unicode — zero-width spaces, joiners, bidi marks and lookalike spaces — with code points and fixes.
13 August 2026 · by James Whitfield