• Chapter 1: Getting Started with Stylus Studio®
• Chapter 2: Editing and Querying XML
• Chapter 3: Converting Non-XML Files to XML
• Chapter 4: Working with XSLT
• Chapter 5: Creating XSLT Using the XSLT Mapper
• Chapter 6: Debugging Stylesheets
• Chapter 7: Defining XML Schemas
• Chapter 8: Defining Document Type Definitions
  • What Is a DTD?
  • Creating DTDs
  • About Editing DTDs
  • About Modifiers in Element Definitions in DTDs
    • Description of Element Modifiers in DTDs
    • Simple Example of Aggregating Modifiers in DTDs
    • More Complex Example of Aggregating Modifiers in DTDs
    • Aggregating Modifiers to Allow Any Order and Any Number in DTDs
  • Defining Elements in DTDs
  • Defining General Entities and Parameter Entities in DTDs
  • Inserting White Space in DTDs
  • Adding Comments to DTDs
  • About Node Properties in DTDs
  • Associating an XML Document with an External DTD
  • Moving an Internal DTD to an External File
• Chapter 9: Writing XPath Expressions
• Chapter 10: Working with XQuery in Stylus Studio
• Chapter 11: Composing Web Service Calls
• Chapter 12: Accessing Relational Data as XML
• Chapter 13: Building XML Pipelines
• Chapter 14: Publishing XML Data
• Chapter 15: Integrating with Third-Party File Systems
• Chapter 16: Extending Stylus Studio
• Chapter 17: The Stylus Studio Java API
• Chapter 18: Stylus Studio GUI Reference

Home > Online Product Documentation > Table of Contents > About Modifiers in Element Definitions in DTDs

About Modifiers in Element Definitions in DTDs

When you define an element, you specify one or more modifiers. A modifier specifies a rule about the structure or occurrence of the element being defined. An element can have only one top-level modifier. However, you can add one or more modifiers to the top-level modifier. A modifier can aggregate elements or other modifiers.

This section discusses the following topics: