| Input | Effect |
|---|---|
| Arrows / Tab / Enter | Move selection; Shift expands range (including multi field gutters on transposed tables) |
| Ctrl+arrow | Jump to data edge. One more press from the first data column or row selects the row header or column header (then the back corner when nested) |
| Space | Open nested structure / file / text URL, insert a table if the cell is empty, toggle checkbox, or open the field metasheet on headers. After Ctrl+X on a structure, Space inserts a table on top of it and opens that table so you can paste the cut data one level deeper |
| Drag row/column headers | Rearrange rows or columns (or the selected header block). Drag the header’s right edge to resize |
| Delete / Backspace | Clear data cells, including nested structures (no need to switch Type to Any first). On header → delete column. On row gutter → delete row/field |
| Esc | Clear marquee / leave keytips → else up one level → else close UI |
| Type | Replace cell contents |
| F2 | Edit in place. On a formula: cursor mode |
| = | Start formula edit |
| Alt (tap) | Keytips: tab → section → command. Arrows / Home / End exit keytips and move the sheet |
| F1 | In-app keyboard reference (includes UI area names) |
Formulas that evaluate to a structure render as a chip. F2 edits the formula; Space explores the result (read-only view of the structure).
UI area names
When describing chrome, use: Top bar, Tabs, Sections, Ribbon menu (a metasheet), Formula bar, Sheet / Frame, Field menu, Status bar. Settings → Show UI area labels paints them on the live app.