<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html lang="en-us" xml:lang="en-us"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="security" content="public" /> <meta name="Robots" content="index,follow" /> <meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' /> <meta name="DC.Type" content="concept" /> <meta name="DC.Title" content="Predefined values" /> <meta name="abstract" content="Predefined values are IBM-defined fixed values that have predefined uses in the CL and are considered to be reserved in the i5/OS operating system." /> <meta name="description" content="Predefined values are IBM-defined fixed values that have predefined uses in the CL and are considered to be reserved in the i5/OS operating system." /> <meta name="DC.Relation" scheme="URI" content="rbam6charsetval.htm" /> <meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" /> <meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" /> <meta name="DC.Format" content="XHTML" /> <meta name="DC.Identifier" content="rbam6predefval" /> <meta name="DC.Language" content="en-us" /> <!-- All rights reserved. Licensed Materials Property of IBM --> <!-- US Government Users Restricted Rights --> <!-- Use, duplication or disclosure restricted by --> <!-- GSA ADP Schedule Contract with IBM Corp. --> <link rel="stylesheet" type="text/css" href="./ibmdita.css" /> <link rel="stylesheet" type="text/css" href="./ic.css" /> <title>Predefined values</title> </head> <body id="rbam6predefval"><a name="rbam6predefval"><!-- --></a> <!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script> <h1 class="topictitle1">Predefined values</h1> <div><p>Predefined values are IBM-defined fixed values that have predefined uses in the CL and are considered to be reserved in the i5/OS™ operating system.</p> <p> Predefined values have an asterisk (*) as the first character in the value followed by a word or abbreviation, such as *ALL or *PGM. The purpose of the * in predefined values is to prevent possible conflicts with user-specified values, such as object names. Each predefined value has a specific use in one or more command parameters, and each is described in detail in the command description.</p> <p>Some predefined values are used as operators in expressions, such as *EQ and *AND. The predefined value *N is used to specify a null value and can be used to represent any optional parameter. A <em>null value</em> (*N) indicates a parameter position for which no value is being specified; it allows other parameters that follow it to be entered in positional form. To specify the characters *N as a character value (not as a null), the string must be enclosed in apostrophes ('*N') to be passed. Also, when the value *N appears in a CL program variable at the time it is run, it is always treated as a null value.</p> </div> <div> <div class="familylinks"> <div class="parentlink"><strong>Parent topic:</strong> <a href="rbam6charsetval.htm" title="This topic explains the usage of the EBCDIC character sets, special characters, and IBM -defined fixed values called predefined values.">CL character sets and values</a></div> </div> </div> </body> </html>