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Enum
BoldMode
How bold is realized. Auto prefers a real bold face and synthesizes only as a fallback.
public static readonly BoldMode Auto = 0Prefer a real bold face (family cut or variable wght axis); synthesize only when none matches.
public static readonly BoldMode Synthetic = 1Keep the current real face and synthesize only the positive weight difference needed to reach the target.
public static readonly BoldMode Real = 2Use a real bold face only; stay at the natural weight when none matches.
