"StyleOther"

"StyleOther" is a front end token that opens the CustomStyle dialog box.

This token is equivalent to the menu command Format Style.

The dialog box lets you type in a style name to be assigned to the selected cell or text. You can also assign cell options by typing the option setting in this dialog box.

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