Mean line
For the branded rail service, see West Midlands Passenger Transport Executive.
In typography, the mean line, also called the midline, is half the distance from the baseline to the cap height. This may or may not be the x-height,[1] depending on the design of the lower case letters. A very high or very low x-height may mean that the midline is above or below the x-height.
This confusion has been perpetuated by books, and websites, on typography which copied from books on type back to the original book or source on type that first failed to clarify this difference.
Round glyphs will break (overshoot) the mean line slightly in many typefaces, since this is aesthetically more pleasing; a rounded shape will appear visually smaller than flat-topped (or bottomed) shapes of equal height, due to an optical illusion.
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References
External links
- Page 12-13 Designing Type by Karen Cheng
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