# M16-GAP-00200 Status status: done task: anim.previewrange_clear operator LOCAL_EXACT slice updated: 2026-08-22 America/New_York scope: - The minimal fixture starts with a `2..6` scene preview range. Desktop runs `ANIM_OT_previewrange_clear` in the active Dope Sheet animation context and saves the cleared Main. - WASM/Main observes the same scene with no `previewRange` field and an unchanged frame range; no reader, protocol, or browser change was required. evidence: - Desktop evidence records `poll=true`, `FINISHED`, `PREVIEW_RANGE_CLEARED`, the cleared values, and exact save/reopen. Repeated checker runs preserve the fixture hash. - WASM/Main compares the cleared scene, preserves it across save/reopen, and rejects malformed Blend input without Main mutation. - Fixture generation, desktop checker, npm comparator, direct comparator, and task-context checks passed. Chromium-only policy was preserved; no Firefox/WebKit run was made. nextTask: `M16-GAP-00201`