[Chapter 1] 1.3 ConventionsChapter 1Oracle PL/SQL Language Pocket Reference 1.3 ConventionsUPPERCASE indicates PL/SQL keywords.lowercase indicates user-defined items such as parameters.Italic indicates file names and parameters within text. Constant width is used for code examples.[] enclose optional items in syntax descriptions.{ } enclose a list of items in syntax descriptions; you must choose one item from the list.| separates bracketed list items in syntax descriptions.1.2 Acknowledgments 1.4 PL/SQL Language Fundamentals Copyright (c) 2000 O'Reilly & Associates. All rights reserved.