newline

from Jargon File (4.4.4, 14 Aug 2003)
newline
 /n[y]oo'li:n/, n.

   1. [techspeak, primarily Unix] The ASCII LF character (0001010), used
   under {Unix} as a text line terminator. Though the term newline
   appears in ASCII standards, it never caught on in the general
   computing world before Unix.

   2. More generally, any magic character, character sequence, or
   operation (like Pascal's writeln procedure) required to terminate a
   text record or separate lines. See {crlf}.
    
from The Free On-line Dictionary of Computing (8 July 2008)
newline

   <character, jargon> /n[y]oo'li:n/ {Line feed} or other
   character sequence used to terminate a line of text.

   {Unix} uses {line feed} as its text line terminator - a
   {Bell-Labs}-ism rather than a {Berkeley}ism.  Interestingly
   (and unusually for Unix jargon), it is said to have originally
   been an {IBM} usage.  Though the term "newline" appears in
   {ASCII} {standards}, it never caught on in the general
   computing world before {Unix}.  The encoding of line feed as
   "\n" in {C} and {Unix} strings comes from this name.

   The term has been used more generally for any {end of line}
   character, character sequence (e.g. {crlf}), or operation
   (like {Pascal}'s writeln procedure or {Lisp 1.5}'s {terpri})
   required to terminate a text record or separate lines.

   [{Jargon File}]

   (1997-07-14)
    

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