draw2dsvg/gc.go
func (gc *GraphicContext) FillStringAt(text string, x, y float64) (cursor float64) {
	return gc.drawString(text, filled, x, y)
}
func (gc *GraphicContext) FillStringAt(text string, x, y float64) (cursor float64) {
	return gc.drawString(text, filled, x, y)
}
// FillStringAt draws the text at the specified point (x, y)