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In
typesetting Typesetting is the composition of text by means of arranging physical ''type'' (or ''sort'') in mechanical systems or ''glyphs'' in digital systems representing ''characters'' (letters and other symbols).Dictionary.com Unabridged. Random Ho ...
, a slug is any of several kinds of piece of
lead Lead is a chemical element with the symbol Pb (from the Latin ) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cu ...
or other
type metal In printing, type metal refers to the metal alloys used in traditional typefounding and hot metal typesetting. Historically, type metal was an alloy of lead, tin and antimony in different proportions depending on the application, be it individu ...
. One kind of slug is a piece of spacing material used to space paragraphs. In the era of commercial typesetting in metal type, they were usually manufactured in strips of 6-
point Point or points may refer to: Places * Point, Lewis, a peninsula in the Outer Hebrides, Scotland * Point, Texas, a city in Rains County, Texas, United States * Point, the NE tip and a ferry terminal of Lismore, Inner Hebrides, Scotland * Point ...
lead. Another kind of slug is a single
sort Sort may refer to: * Sorting, any process of arranging items in sequence or in sets ** Sorting algorithm, any algorithm for arranging elements in lists ** Sort (Unix), a Unix utility which sorts the lines of a file ** Sort (C++), a function in the ...
, bearing a single letter or other symbol. More recently, a slug can be an entire line of Linotype typeset matter, where a single piece of lead has been cast bearing a line of text. In modern typesetting programs such as
Adobe InDesign Adobe InDesign is a desktop publishing and page layout designing software application produced by Adobe Inc. and first released in 1999. It can be used to create works such as posters, flyers, brochures, magazines, newspapers, presentations, ...
, slugs hold printing information, customized color bar information, or display other instructions and descriptions for other information in the document. Objects (including text frames) positioned in the slug area are printed but will disappear when the document is trimmed to its final page size. Slugs, or slug lines, are also the name for incidental typeset lines of type that are intended either for the printer's or binder's benefit (such as a
collation mark Collation is the assembly of written information into a standard order. Many systems of collation are based on numerical order or alphabetical order, or extensions and combinations thereof. Collation is a fundamental element of most office filin ...
, a
catch line Advertising slogans are short phrases used in advertising campaigns to generate publicity and unify a company's marketing strategy. The phrases may be used to attract attention to a distinctive product feature or reinforce a company's brand. Etym ...
, or a
galley slug A galley is a type of ship that is propelled mainly by oars. The galley is characterized by its long, slender hull, shallow draft, and low freeboard (clearance between sea and gunwale). Virtually all types of galleys had sails that could be used ...
) or as advertising for the producer of the printed piece (such as a line of type showing the name of the printer, the printer's item number or job number, and the telephone number of the printer in order to make reorders simple).


Usage in web publishing

This term is also used in web publishing to refer to short article labels that may be used as part of a URL. Slugs are usually derived from an article's title and are limited in length, and to a specific set of characters (to prevent
percent-encoding Percent-encoding, also known as URL encoding, is a method to encode arbitrary data in a Uniform Resource Identifier (URI) using only the limited US-ASCII characters legal within a URI. Although it is known as ''URL encoding'', it is also used ...
); often only letters, numbers, and hyphens are allowed.


References


See also

*
Reglet (typesetting) A reglet is a piece of wooden spacing material used in typesetting, usually to provide spacing between paragraphs, though it is sometimes used to fill in small spaces not taken up by type in the chase. Notes See also * Slug (typesetting) In typ ...
*
Furniture (typesetting) In typesetting, furniture is a term for pieces of wood that are shorter than the height of the type. These pieces are used to lay out type by blocking out empty spaces (white space) in a layout set in a chase Chase or CHASE may refer to: Busine ...
*
Leading In typography, leading ( ) is the space between adjacent lines of type; the exact definition varies. In hand typesetting, leading is the thin strips of lead (or aluminium) that were inserted between lines of type in the composing stick to incre ...
*
Sort (typesetting) In typesetting, a sort or type is a block with a typographic character etched on it, which is lined up with others to print text. In movable-type printing, the sort or type is cast from a matrix mold and assembled by hand with other sorts be ...
{{typ-stub Typesetting