<?xml version="1.0" encoding="UTF-8"?><urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:news="http://www.google.com/schemas/sitemap-news/0.9"><url><loc>https://letters.byburk.net/p/what-the-hell-are-claude-skills-customgpts</loc><news:news><news:publication><news:name>Letters by Burk</news:name><news:language>en</news:language></news:publication><news:publication_date>2026-06-16T14:52:11+00:00</news:publication_date><news:title>What the Hell Are Claude Skills, CustomGPTs, Gemini Gems?</news:title></news:news></url><url><loc>https://letters.byburk.net/p/there-is-no-apple-workspace</loc><news:news><news:publication><news:name>Letters by Burk</news:name><news:language>en</news:language></news:publication><news:publication_date>2026-06-16T14:46:43+00:00</news:publication_date><news:title>There Is No Apple Workspace</news:title></news:news></url></urlset>