Merge and Unmerge Cells
Opens a submenu for merging and unmerging cells.
This is a toggleable control that joins all cells in a rectangular selection into a single cell, or returns merged cells to the original individual cells. When merging it will format the merged cell as center aligned.
Combines the contents of the selected cells into a single cell, retaining the formatting of the first cell in the selection.
Divides previously merged cells back to the original cells. If the original cells had content that was kept when merged that content is restored.