A variable in a design (spec/14 §7.1).

Visualize.Chart.var/1 builds one. The term is allowed wherever a value can appear — a style value, a text part, a channel, a whole node — and resolves at application. It carries only the name: the default is declared once under the design's vars (D-59).

Examples

iex> Visualize.Chart.var(:unit)
%Visualize.Chart.Var{name: :unit}