setTitle(text [, font [, fontSize [, fontColor ]]])

Adds a title to the axis.

See Font Specification for details on various font attributes.

Argument	Default	Description
text	(Mandatory)	The title text.
font	""	The font used to draw the title. If no font is specified, the default is "bold".
fontSize	8	The size of the font in points.
fontColor	TextColor	The color used to draw the title text.

A TextBox object representing the axis title. This may be used to fine-tune the appearance of the axis title.