As an example of how to apply a typography option to a piece of text:

var typography = new CanvasTypography();
typography.AddFeature(CanvasTypographyFeatureName.ContextualSwash, 1);

var format = new CanvasTextFormat();
var textLayout = new CanvasTextLayout(resourceCreator, "Abc", format, 100, 100);
textLayout.SetTypography(1, 1, typography);

A CanvasTypography is mutable; adding features will modify it. It's valid to add the same feature multiple times, regardless of the parameter.

Not all features are supported by all fonts. If a feature is not supported by the font being used with the typography option, the feature will simply be ignored.

While font features treat their parameters in different ways, there is a general convention that setting a feature's parameter to zero disables the feature, and a nonzero parameter enables it.

When using Direct2D interop, this Win2D class corresponds to the DirectWrite interface IDWriteTypography.

Reference