Static kCTBaselineReferenceFont 

pub unsafe static kCTBaselineReferenceFont: &'static CFString

Available on crate feature CTFont only.

kCTBaselineReferenceFont

Key to reference a font for the reference baseline.

This key can be used to specify a font for the reference baseline. The value is a CTFontRef or the kCTBaselineOriginalFont constant.

See also Apple’s documentation