True if a series of three or more hyphens (-), equal signs (=), or underscore characters (_) are automatically replaced by a specific border line when the ENTER key is pressed. Read/write Boolean.
Remarks
Hyphens (-) are replaced by a 0.75-point line, equal signs (=) are replaced by a 0.75-point double line, and underscore characters (_) are replaced by a 1.5-point line.