"SimilarCellBelow"

"SimilarCellBelow" is a front end token that creates a new cell below the selected cell with all the same styles and options as the selected cell.

This token is equivalent to the menu command Input Start New Cell Below.

Any selections are placed in the newly created cell.

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