Change height and width of a row or column | Alt-resize |
Select cells | Click cell border |
Select multiple adjacent cells | Click-drag |
Select multiple nonadjacent cells | Shift-click additional cells |
Select all cells in column | Click on top edge of column |
Select all cells in row | Click on left edge of row |
Add row above | * |
Add columns to the left/right | +/- |
Interactively add cells and rows | Ctrl - -drag bottom/right edge of table |
Delete current column | Ctrl-Del |
Delete current row | + Ctrl + Del
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Span columns, joining current cell with cell to the right | + 
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Reduce column span, splitting the current cell | + 
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Span rows, joining current cell with cell below | +
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Reduce row span, splitting the current cell | +
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Move text cursor to next cell to the right | Tab |
Move text cursor to next cell to the left | + Tab
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Switch from text entry to cell selection mode | Ctrl + Enter |
Switch from cell selection to text entry mode | Enter |