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 2013.11-24) 15version 2.23.52. 16 17Copyright (C) 1991-2013 Free Software Foundation, Inc. 18 19Permission is granted to copy, distribute and/or modify this document 20under the terms of the GNU Free Documentation License, Version 1.3 21or any later version published by the Free Software Foundation; 22with no Invariant Sections, with no Front-Cover Texts, and with no 23Back-Cover Texts. A copy of the license is included in the 24section entitled ``GNU Free Documentation License''.--> 25<meta http-equiv="Content-Style-Type" content="text/css"> 26<style type="text/css"><!-- 27 pre.display { font-family:inherit } 28 pre.format { font-family:inherit } 29 pre.smalldisplay { font-family:inherit; font-size:smaller } 30 pre.smallformat { font-family:inherit; font-size:smaller } 31 pre.smallexample { font-size:smaller } 32 pre.smalllisp { font-size:smaller } 33 span.sc { font-variant:small-caps } 34 span.roman { font-family:serif; font-weight:normal; } 35 span.sansserif { font-family:sans-serif; font-weight:normal; } 36--></style> 37<link rel="stylesheet" type="text/css" href="../cs.css"> 38</head> 39<body> 40<div class="node"> 41<a name="Symbols"></a> 42<p> 43Next: <a rel="next" accesskey="n" href="Orphan-Sections.html#Orphan-Sections">Orphan Sections</a>, 44Previous: <a rel="previous" accesskey="p" href="Symbolic-Constants.html#Symbolic-Constants">Symbolic Constants</a>, 45Up: <a rel="up" accesskey="u" href="Expressions.html#Expressions">Expressions</a> 46<hr> 47</div> 48 49<h4 class="subsection">3.10.3 Symbol Names</h4> 50 51<p><a name="index-symbol-names-519"></a><a name="index-names-520"></a><a name="index-quoted-symbol-names-521"></a><a name="index-g_t_0022-522"></a>Unless quoted, symbol names start with a letter, underscore, or period 52and may include letters, digits, underscores, periods, and hyphens. 53Unquoted symbol names must not conflict with any keywords. You can 54specify a symbol which contains odd characters or has the same name as a 55keyword by surrounding the symbol name in double quotes: 56<pre class="smallexample"> "SECTION" = 9; 57 "with a space" = "also with a space" + 10; 58</pre> 59 <p>Since symbols can contain many non-alphabetic characters, it is safest 60to delimit symbols with spaces. For example, ‘<samp><span class="samp">A-B</span></samp>’ is one symbol, 61whereas ‘<samp><span class="samp">A - B</span></samp>’ is an expression involving subtraction. 62 63 </body></html> 64 65