Enable synthesized font variations. Controls whether the server should generate an error response or synthesize a bold, italic, or bold/italic font style if such a style is requested but cannot be found in the font map.
Synthesizing font styles often result in lower-quality renderings than using actual fonts for such styles.
Flag. Set to 0 to disable and to 1 to enable synthetic font styles.
Inherited from default::SynthesizeFontStyles
if not defined or if empty.