DefaultFontProperties
This function has not been fully integrated into the long-term Wolfram Language, and is subject to change.
is a global option that specifies various properties of a font family, such as its character encoding and whether it is monospaced.
Details

- For each font family, a few characteristics are specified in the form of a list of rules. If a font is not listed in this option, its properties are deduced from information provided by the system, but this information is not always reliable. DefaultFontProperties can be used to override the system information, if it is inaccurate.
Wolfram Research (1999), DefaultFontProperties, Wolfram Language function, https://reference.wolfram.com/language/ref/DefaultFontProperties.html.
Text
Wolfram Research (1999), DefaultFontProperties, Wolfram Language function, https://reference.wolfram.com/language/ref/DefaultFontProperties.html.
CMS
Wolfram Language. 1999. "DefaultFontProperties." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/DefaultFontProperties.html.
APA
Wolfram Language. (1999). DefaultFontProperties. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/DefaultFontProperties.html