{"version":"2.1.251","anchor":"additional-unnamed-system-prompt-section","canonical_anchor":"additional-unnamed-system-prompt-section","heading":"Additional unnamed system-prompt section","tier":"internal","area":"System Prompt","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.251\/e\/additional-unnamed-system-prompt-section","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.251","markdown":"### Additional unnamed system-prompt section\n\nThe system prompt gained another section and computes Claude's identity block differently.\n\n**What**\n\nThe system prompt is assembled from named sections, and a further one has been added next to an existing similarly named section, while the block that establishes Claude's identity is now computed through a different check.\n\n**Details**\n\n- What the new section contains and what makes it appear are not determined by the surrounding code.\n\n**Evidence**\n\n`yc(\"brook_heron\", () => h8t(u))`\n\n- Area: System Prompt\n- Tier: Under the hood\n- Useful: 1\/5\n- Signal: 3\/5"}