Interface: GridMergeWrite

One merge in a SetMerges: the merge whose top-left cell is anchor, and the cells it covers, None for no merge there.

Properties

Property	Description
`anchor` `GridCellRef`	The merge's top-left cell.
`range` `GridCellRange` \| `null`	The cells it covers, `anchor` their top-left; `None` taking the merge there away.