1<html lang="en"> 2<head> 3<title>Symbols - Untitled</title> 4<meta http-equiv="Content-Type" content="text/html"> 5<meta name="description" content="Untitled"> 6<meta name="generator" content="makeinfo 4.13"> 7<link title="Top" rel="start" href="index.html#Top"> 8<link rel="up" href="Expressions.html#Expressions" title="Expressions"> 9<link rel="prev" href="Symbolic-Constants.html#Symbolic-Constants" title="Symbolic Constants"> 10<link rel="next" href="Orphan-Sections.html#Orphan-Sections" title="Orphan Sections"> 11<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> 12<!-- 13This file documents the GNU linker LD 14(Sourcery CodeBench Lite 2011.09-69) 15version 2.21.53. 16 17Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 182001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. 19 20Permission is granted to copy, distribute and/or modify this document 21under the terms of the GNU Free Documentation License, Version 1.3 22or any later version published by the Free Software Foundation; 23with no Invariant Sections, with no Front-Cover Texts, and with no 24Back-Cover Texts. A copy of the license is included in the 25section entitled ``GNU Free Documentation License''.--> 26<meta http-equiv="Content-Style-Type" content="text/css"> 27<style type="text/css"><!-- 28 pre.display { font-family:inherit } 29 pre.format { font-family:inherit } 30 pre.smalldisplay { font-family:inherit; font-size:smaller } 31 pre.smallformat { font-family:inherit; font-size:smaller } 32 pre.smallexample { font-size:smaller } 33 pre.smalllisp { font-size:smaller } 34 span.sc { font-variant:small-caps } 35 span.roman { font-family:serif; font-weight:normal; } 36 span.sansserif { font-family:sans-serif; font-weight:normal; } 37--></style> 38<link rel="stylesheet" type="text/css" href="../cs.css"> 39</head> 40<body> 41<div class="node"> 42<a name="Symbols"></a> 43<p> 44Next: <a rel="next" accesskey="n" href="Orphan-Sections.html#Orphan-Sections">Orphan Sections</a>, 45Previous: <a rel="previous" accesskey="p" href="Symbolic-Constants.html#Symbolic-Constants">Symbolic Constants</a>, 46Up: <a rel="up" accesskey="u" href="Expressions.html#Expressions">Expressions</a> 47<hr> 48</div> 49 50<h4 class="subsection">3.10.3 Symbol Names</h4> 51 52<p><a name="index-symbol-names-510"></a><a name="index-names-511"></a><a name="index-quoted-symbol-names-512"></a><a name="index-g_t_0022-513"></a>Unless quoted, symbol names start with a letter, underscore, or period 53and may include letters, digits, underscores, periods, and hyphens. 54Unquoted symbol names must not conflict with any keywords. You can 55specify a symbol which contains odd characters or has the same name as a 56keyword by surrounding the symbol name in double quotes: 57<pre class="smallexample"> "SECTION" = 9; 58 "with a space" = "also with a space" + 10; 59</pre> 60 <p>Since symbols can contain many non-alphabetic characters, it is safest 61to delimit symbols with spaces. For example, ‘<samp><span class="samp">A-B</span></samp>’ is one symbol, 62whereas ‘<samp><span class="samp">A - B</span></samp>’ is an expression involving subtraction. 63 64 </body></html> 65 66