Definition of script typeface12/18/2023 ![]() A script is a collection of glyphs used to represent one or more languages in written form (see Figure 2a). OpenType Layout data is organized by script, language system, typographic feature, and lookup. The OpenType Layout tables provide typographic information for properly positioning and substituting glyphs, operations that are required for accurate typography in many language environments. Separate chapters provide complete details about the GSUB, GPOS, BASE, JSTF, and GDEF tables. This chapter explains the conventions used in all OpenType Layout tables, and it describes the common table formats. These tables use some of the same data formats. ![]() ![]() any letter whose stem goes below this point is called a descender.OpenType Layout consists of five tables: the Glyph Substitution table (GSUB), the Glyph Positioning table (GPOS), the Baseline table (BASE), the Justification table (JSTF), and the Glyph Definition table (GDEF). Baseline – The line on which any letter sits.X-Height – The height of the lowercase portion of letters, which is typically defined by the height of the lowercase x.Cap Height – The height from the baseline of a typeface to the top of the uppercase letters.Terminal – The end of any stroke in a letter that doesn’t end in a serif.Descender – The portion of a letter that extend below the baseline, found in y, p, or q. ![]() Axis – The line that bisects a letter down the middle is referred to as an axis.Serif – The squared or rectangular end on the stroke of a letter, including the stems, legs, arms, etc.Loop – The rounded portion of a lowercase g.Neck/Link – The thin line that connects the upper and lower bowls of a lowercase g.Finial – The tapered portion of the end of the stroke of a letter such as in the letter c or e.Counter – The closed or partially-enclosed circular or curved area of empty space of some letters such as o, and d.Bowl – The curved part of a letter that encloses the circular portion of a letter, such as a B, P, g, D, etc.This name comes from the fact that it resembles a human shoulder. Shoulder – The rounded part of a letter such as r, m, or n.Ascender – The part of a lowercase letter that rises above the x-height, such as a b, d, h, etc.Ear – A decorative flourish usually on the upper right side of the bowl on a lowercase g.Eye – The enclosed portion of the lowercase e.If there is not bracket present in the letter, but there is still a serif, then you’re usually viewing a slab serif typeface. Bracket – The curved part of a letter between the stem and the serif.Spine – The middle diagonal line that connects the rounded portions found on the letter S.Tail – The descender found on the letter Q. ![]()
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