27.5 Using ColGroup and RowGroup cells
ColGroup and RowGroup designations describe a structural fact about a table: that the contents of the column or row header cell applies beyond its own column or row.
§27.5.1 Understanding how the ColGroup property works
§27.5.2 Understanding how the RowGroup property works
See §26.2.1 Specifying group properties for header cells for information about specifying ColGroup and RowGroup cells.
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