Available
Option for adding legends to plots identifying each series
`PlotLegends` is the option for adding a legend that identifies each series in a plot. On Qurak the legend's colour swatches render but the label text beside them does not - `PlotLegends -> {"sin", "cos"}` produces two coloured swatches with no words, which identifies nothing. Until the engine renders legend text, label series another way: annotate the plot directly with `Epilog -> {Text["sin", {x, y}], ...}`, encode the identity in the caption around the chart, or plot the series separately.