Keyboard shortcuts

• Ctrl/Cmd + S - Save bundle
• Ctrl/Cmd + F - Find (searches the active sheet only); Enter / Shift + Enter jumps to the next / previous match, Escape closes it
• Ctrl/Cmd + A - Select the current data region; press again to select the whole sheet
• Ctrl/Cmd + Z - Undo
• Ctrl/Cmd + Shift + Z or Ctrl/Cmd + Y - Redo
• Ctrl/Cmd + C / V - Copy / paste (tab-separated, works with Excel/Sheets)
• Ctrl/Cmd + B / I - Bold / italic
• Arrow keys - Move the active cell
• Shift + Arrow keys - Extend the selection
• Tab / Shift + Tab - Move right / left
• Enter / Shift + Enter - Move down / up
• F2 - Edit the active cell
• Backspace / Delete - Clear the selection
• Escape - Cancel an edit in progress
• Typing any character - Starts editing the active cell, replacing its contents

Mouse & sheet tabs

• Click a row or column header - Select that whole row/column
• Click the corner cell - Select the whole sheet
• Click a sheet tab - Switch to it
• Double-click a sheet tab - Rename it
• Right-click a sheet tab - Delete it

Resizing & overflow

• Drag a column/row header's edge - Resize it by hand
• Double-click a column header's edge - Fit the column to its widest content
• Size button - Set the active column's width / row's height to an exact pixel value
• ↦ button - Toggle overflow: lets a cell's text spill into empty cells to its right instead of being clipped

Cell type & cross-sheet formulas

• Type dropdown - Number (default, auto-detects dates/times/percents/currency), Text (keeps a numeric-looking value like "007" literal, never coerced to a number), Percent, Date, Time
• SheetName!R1C1 - References a cell on another sheet in a formula, e.g. =SUM(Sheet2!R1C1:R5C1); type it by hand, sheet names with spaces aren't supported yet

Fill Down

• Ctrl/Cmd + D or the Fill Down button - Copies the top row of the selection downward. With just one cell active (no range selected), the fill height is auto-detected from the nearest neighboring column's data, same as double-clicking Excel's fill handle
• R[-1]C1 - A bracketed number is relative to wherever the formula ends up (here, one row above); a plain number is absolute and never shifts. Mix per-axis, e.g. R[0]C1:R[0]C3 keeps the same row as the formula but always columns 1-3

Formula reference

Formulas are provided by the HyperFormula 3.3.0 engine.

• Common functions (SUM, IF, VLOOKUP, etc.)