- setRegionVisibility(category, visible) — toggle single region - setAllRegionsVisible(visible) — bulk toggle - getMemoryCountByRegion() — count memories per category - isRegionVisible(category) — query visibility state
- setRegionVisibility(category, visible) — toggle single region - setAllRegionsVisible(visible) — bulk toggle - getMemoryCountByRegion() — count memories per category - isRegionVisible(category) — query visibility state