A group of a type not drawn yet (the 2016 types): the plot it would draw in, and a label there saying so, in place of what it would draw. The first such group of a chart carries the label.
None: the type's axes are not drawn.
Optional
" rendering is not supported yet", centered in the plot.
The plot area, in px.
A group of a type not drawn yet (the 2016 types): the plot it would draw in, and a label there saying so, in place of what it would draw. The first such group of a chart carries the label.