gtk:text-tag-scale (object)

object -- a gtk:text-tag object
scale -- a double float with the font size as a scale factor

Accessor of the scale slot of the gtk:text-tag class. The font size as a scale factor relative to the default font size. This property adapts to theme changes etc. so is recommended. Pango predefines some scales such as the pango:+scale-x-large+ value.