Information about X Height

Ex (typography) redirects here. For other uses of the term “ex”, see Ex (disambiguation).




In typography, the x-height or corpus size refers to the distance between the baseline and the mean line in a typeface. Typically, this is the height of the letter x in the font (which is where the terminology came from), as well as the a, c, e, m, n, o, r, s, u, v, w, and z. However, in modern typography, the x-height is simply a design characteristic of the font, and while an x is usually exactly one x-height in height, this is not always the case.

Lowercase letters whose height is greater than the x-height either have descenders which extend below the baseline, such as y, g, q, and p, or have ascenders which extend above the x-height, such as l, k, b, and d. The ratio of the x-height to the body height is one of the major characteristics that defines the appearance of a font.

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EX may stand for:
  • A previous of something
  • Example
  • Exercise
  • Exeter, England
  • Exponent
  • the IATA airline designator for Air Santo Domingo
  • TV Asahi (JOEX-TV, JOEX-DTV), a Japanese TV station in Roppongi, Tokyo, Japan

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Typography is the art and techniques of type design, modifying type glyphs, and arranging type. Type glyphs (characters) are created and modified using a variety of illustration techniques.
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baseline is the line upon which most letters "sit" and under which descenders extend.

In the example to the right, the letter 'p' has a descender; the other letters sit on the (red) baseline.
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In typography, the mean line is the line that determines where non-ascending lowercase letters terminate in a typeface. The distance between the baseline and the mean line is called the x-height.
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Lower case or lowercase or minuscule letters are the smaller form of letters, as opposed to capital letters: for example, the letter "a" is lower case while the letter "A"
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descender is the portion of a letter in a Latin-derived alphabet that extends below the baseline of a font.

For example, in the letter y, the descender would be the "tail," or that portion of the diagonal line which lies below the v
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baseline is the line upon which most letters "sit" and under which descenders extend.

In the example to the right, the letter 'p' has a descender; the other letters sit on the (red) baseline.
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ascender is the portion of a letter in a Latin-derived alphabet that extends above the mean line of a font. That is, the part of the letter that is taller than the font's x-height.

Ascenders, together with descenders, increase the recognizability of words.
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An en is a typographic unit, half of the width of an em. By definition it is equivalent to half of the height of the font (e.g. in 16 point type it is 8 points). As its name suggests, it is also traditionally the width of a letter "N".
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small caps (short for small capitals) are uppercase (capital) characters that are printed in a smaller size than normal uppercase characters of the same font.
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Typography is the art and techniques of type design, modifying type glyphs, and arranging type. Type glyphs (characters) are created and modified using a variety of illustration techniques.
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page is one side of a leaf of paper. It can be used as a measurement of documenting or recording quantity ("that topic covers twelve pages").

The page in typography


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Pagination is the system by which the information on a newspaper, bookpage, manuscript, or otherwise handwritten or printed document are laid out.

In a strict sense of the word, it can mean the consecutive numbering to indicate the proper order of the pages, which was rarely
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recto is the right-hand page and the verso the left-hand page ("verso" can also mean to turn over in the mind) of a folded sheet or bound item, such as a book, broadsheet, or pamphlet.
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recto is the right-hand page and the verso the left-hand page ("verso" can also mean to turn over in the mind) of a folded sheet or bound item, such as a book, broadsheet, or pamphlet.
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In typography, a margin is the white space that surrounds the content of a page. The margin helps to define where a line of text begins and ends. When a page is justified the text is spread out to be flush with the left and right margins.
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column is one or more vertical blocks of text positioned on a page, separated by margins and/or rules. Columns are most commonly used to break up large bodies of text that cannot fit in a single block of text on a page.
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canons of page construction have been described by them to represent the ways in which these books may have been designed.

The notion of canons, or laws of form, of book page construction was popularized by Jan Tschichold in the mid to late twentieth century, based on the
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A paragraph is a self-contained unit of a discourse in writing dealing with a particular point or idea, or the words of an author. The start of a paragraph is indicated by beginning on a new line and ending without running to the next passage.
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In typesetting, widow refers to the final line of a paragraph that falls at the top the following page of text, separated from the remainder of the paragraph on the previous page. The term can also be used to refer simply to an uncomfortably short (e.g.
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leading (IPA [ˈlɛdɪŋ], rhymes with heading) refers to the amount of added vertical spacing between lines of type.
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In typography, rivers, or rivers of white, are visually unattractive gaps appearing to run down a paragraph of text. They often result from full text justification, although they can occur in any text justification.
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baseline is the line upon which most letters "sit" and under which descenders extend.

In the example to the right, the letter 'p' has a descender; the other letters sit on the (red) baseline.
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In typography, the mean line is the line that determines where non-ascending lowercase letters terminate in a typeface. The distance between the baseline and the mean line is called the x-height.
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In typesetting and page layout, alignment or range, is the setting of text flow or image placement relative to a page, column (measure), table cell or tab. The type alignment setting is sometimes referred to as text alignment, text justification or
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In typesetting, justification (can also be referred to as 'full justification') is the typographic alignment setting of text or images within a column or "measure" to align along both the left and right margin. Text set this way is said to be "justified".
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glyph is the shape given in a particular typeface to a specific grapheme or symbol.

The term for the abstract entity represented by a glyph is character: a typographical character may be a grapheme (an element of a writing system), but also a numeral, a punctuation
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ligature occurs where two or more letter-forms are joined as a single glyph. Ligatures usually replace two sequential characters sharing common components, and are part of a more general class of glyphs called "contextual forms" where the specific shape of a letter depends on
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letter-spacing, also called tracking, refers to the amount of space between a group of letters to affect density in a line or block of text. Since the advent of personal computers the term tracking is frequently used.
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