An art studio
Given: START choices DRAW LINE (one stroke) and PLACE DOT (ring); DRAW LINE→A “A broad zigzag drawing”; PLACE DOT→B “Three original ring marks”. Patterns are invented artwork, not instructions to use a real tool. Job / invitation: Choose which art page to explore. Child may invent different patterns with a complete key. Worked: The one-stroke input selects A even though B also contains marks. A changed picture does not change its rule until the rule is changed. No real paint, action or enjoyment is supplied. Next: If changing colour is expected to reroute the button, keep colour unchanged and change only a rule in an unrelated ordinary show; contrast meaning with operation.