[mikemaccana]

Summary

The Options chapter used "write" in a section heading, in the handler's name write_option(), and throughout the walkthrough, but never said that creating an option is called writing it. A reader new to options would wonder why the handler is not called create. The list that opens the concept section now presents itself as terminology, gives the two parties a bullet each, writer first, and defines the word there:

Options have some unique terminology:

• Its premium is what the buyer pays for the right, once, up front.
• Its kind is a call, the right to buy the underlying asset, or a put, the right to sell it.
• Its strike is the price the trade happens at if the right is used.
• Its expiry is the last moment the right can be used.
• The writer creates the option, which is called writing it, and in doing so agrees to sell or buy the underlying asset at the strike if asked.
• The holder buys the option and may use the right it carries. Using the right is exercising the option.

The old intro, "An option has five terms", read as the terms of the contract when the list is the words. The glossary's writer entry matches: "the party who writes an option, which is the word for creating one and selling the right it carries".

Three commits, authored under the book author's own email with no assistant co-author trailer, per CLAUDE.md. The branch is restarted from main, which now carries both #106 and #107.

Verified

npm run lint and node scripts/check-figure-geometry.mjs are clean across all 91 figures, and npm run build-pdf produces 276 pages with the title page on page 3 and every part and chapter opening on a right-hand page.

🤖 Generated with Claude Code

https://claude.ai/code/session_014RdEWCoCChaoKPhvcftHVG