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In
typography, '''leading''' (pronounced ''ledd-ing'') refers to the amount of added space between lines of type. When type was set by hand for
printing presses, printers placed slugs -- strips of
lead of various thicknesses -- between lines of type to add space.
Leading is commonly confused with ''line height'', which refers to the full height of a line of type (the size of the tallest letter in a font of type, plus the thickness of the leading). Text with no leading is ''set solid''. In this case, the line height is equal to the type size.
Image:Leading.pngde:Durchschuss
