Font Specifications

[YiddleYeeMondashi]

[font=Segoe Sans, Segoe UI, Segoe UI Web (West European), -apple-system, BlinkMacSystemFont, Roboto, Helvetica Neue, sans-serif]Are specifications such as Character height, stroke width, character width, and character spacing inherent in each particular font's design and style (e.g., Futura, Helvetica)? Or, are these specifications customizable with each particular font?[/font]