PeachDrawing.Text
PeachDrawing.Text.Typeface
Typeface.SupportsFeatures(IReadOnlySet<string>) Method
Whether the font’s GSUB table has an active lookup for every one of the OpenType feature tags.
public bool SupportsFeatures(System.Collections.Generic.IReadOnlySet<string> tags);
Parameters
tags System.Collections.Generic.IReadOnlySet<System.String>
Four-letter feature tags such as smcp.
Returns
Remarks
Each tag is checked on its own, under the default script and language of the font, so the answer says whether the feature exists in the font at all and not whether it applies to the script of a particular piece of text.