• Selection Box / Ruler
• Inspect: one card for the whole selection — counts, sums, averages, ranges
• Group edit: values, sliders, material — applied to every selected object
• Material: dropdown picker in the card
• Histograms per property: click a bar = narrow the group, Shift+click = exclude
• Layer as enum
• keybinds reassignable for the group
• Flags show honest shares; numbers in K/M/G/T
• Ctrl+A select all
• Delete key removes the selection
• The card remembers folded tags
• Palette: '1 row' mode with paging
• Reactions: all reactions as a live graph — materials are nodes, reactions are links
• Force auto-layout with a tuner; the arrangement is saved
• White = direct parts, gray = catalyst ties; hover unfolds dense pairs
• Click a material on the map to inspect it; unused materials filter
• New reaction opens as a card; short how-to on first open