"CellUngroup"

"CellUngroup" is a front end token that ungroups the currently selected cells.

This token is equivalent to the menu command Cell Cell Grouping Ungroup Cells.

This token will work only if Cell Grouping Manual Grouping. See Group Cells for more information.

To execute a front end token, you typically evaluate a command of the form FrontEndExecute[FrontEndToken[token]].