"Otherscript"

"Otherscript" is a front end token that moves the selection to the "other" script position.

This token is equivalent to the menu command Edit Expression Input Opposite Position.

If the selection is in the superscript position, "Otherscript" will move the selection to the subscript position.

If the selection is in the subscript position, "Otherscript" will move the selection to the superscript position.

If the selection is in the overscript position, "Otherscript" will move the selection to the underscript position.

If the selection is in the underscript position, "Otherscript" will move the selection to the overscript position.

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