Every number in the pattern switches to your size. You can change it later.
Claude sees the pattern, your size and method, and the step you're on. Ask what something means, check a count, or describe a change you'd like.
Changes you've made with Ask, newest last. Undo takes back the latest one.
Upload the pattern PDF, or paste its text. Claude turns it into row-by-row steps for every size, then the app checks every stitch count before you save it. Keep this open while it works: it takes a few minutes.