How does “Writing it” work on the Company Letters page?

The AI assistant takes a plain description and writes the body for the chosen company; if the body already has text, the prompt revises it rather than replacing it. Everything it writes lands in the editor to be read and changed. The internal title, used only to find the letter again, follows the first line until you give it one. The letterhead details are the company's branding offered for this letter — change the tagline or the header address for one letter without touching the company's record. The page size is A4 unless you choose A3 or A2. Where: Company Letters (/accounts/letters).