Typographical syntax
Encyclopedia
Typographical syntax, also known as orthotypography, is the aspect of typography
Typography
Typography is the art and technique of arranging type in order to make language visible. The arrangement of type involves the selection of typefaces, point size, line length, leading , adjusting the spaces between groups of letters and adjusting the space between pairs of letters...

  that defines the meaning and rightful usage of typographic sign
Glyph
A glyph is an element of writing: an individual mark on a written medium that contributes to the meaning of what is written. A glyph is made up of one or more graphemes....

s, notably punctuation marks
Punctuation
Punctuation marks are symbols that indicate the structure and organization of written language, as well as intonation and pauses to be observed when reading aloud.In written English, punctuation is vital to disambiguate the meaning of sentences...

, and elements of layout
Comprehensive layout
In graphic design and advertising, a comprehensive layout or comprehensive, usually shortened to comp, is the page layout of a proposed design as initially presented by the designer to a client, showing the relative positions of text and illustrations before the specific content of those elements...

 such as flush margins
Justification (typesetting)
In typesetting, justification is the typographic alignment setting of text or images within a column or "measure" to align along both the left and right margin...

 and indentation
Indentation
An indentation may refer to:* A notch, or deep recesses; for instance in a coastline, or a carving in rock* The placement of text farther to the right to separate it from surrounding text....

.

Orthotypographic rules vary broadly from language
Language
Language may refer either to the specifically human capacity for acquiring and using complex systems of communication, or to a specific instance of such a system of complex communication...

 to language, from country to country, and even from publisher to publisher. As such, they are more often described as "conventions
Convention (norm)
A convention is a set of agreed, stipulated or generally accepted standards, norms, social norms or criteria, often taking the form of a custom....

".

While some of those conventions have ease of understanding as a justification–for instance, specifying that low punctuation (comma
Comma
A comma is a type of punctuation mark . The word comes from the Greek komma , which means something cut off or a short clause.Comma may also refer to:* Comma , a type of interval in music theory...

s, full stop
Full stop
A full stop is the punctuation mark commonly placed at the end of sentences. In American English, the term used for this punctuation is period. In the 21st century, it is often also called a dot by young people...

s, and ellipses
Ellipsis
Ellipsis is a series of marks that usually indicate an intentional omission of a word, sentence or whole section from the original text being quoted. An ellipsis can also be used to indicate an unfinished thought or, at the end of a sentence, a trailing off into silence...

) must be in the same typeface
Typeface
In typography, a typeface is the artistic representation or interpretation of characters; it is the way the type looks. Each type is designed and there are thousands of different typefaces in existence, with new ones being developed constantly....

, weight, and style as the preceding text – many are probably arbitrary
Arbitrary
Arbitrariness is a term given to choices and actions subject to individual will, judgment or preference, based solely upon an individual's opinion or discretion.Arbitrary decisions are not necessarily the same as random decisions...

.

The rules dealing with quotation mark
Quotation mark
Quotation marks or inverted commas are punctuation marks at the beginning and end of a quotation, direct speech, literal title or name. Quotation marks can also be used to indicate a different meaning of a word or phrase than the one typically associated with it and are often used to express irony...

s are a good example of this: which ones to use and how to nest them, how much whitespace to leave on both sides, and when to integrate them with other punctuation marks.

Each major publisher maintains a list of orthotypographic rules that they apply as part of their house style.
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