Vertical Metrics Explained: hhea, typo, win, and USE_TYPO_METRICS
Why the same font can get a different line height on macOS and Windows: the three sets of vertical metrics, the USE_TYPO_METRICS flag, and what you can do in CSS.
Why the same font can get a different line height on macOS and Windows: the three sets of vertical metrics, the USE_TYPO_METRICS flag, and what you can do in CSS.