1.1 Documentation
1.2 History
1.3 Standards
1.4 Trademarks
1.5 Introduction (ISO 26324)
1.6 Overview
      1.6.1 The DOI system concept
      1.6.2 DOI system components
      1.6.3 DOI name syntax
      1.6.4 DOI name resolution
      1.6.5 DOI^® data model
      1.6.6 DOI system implementation
1.7 Benefits of the DOI system

2.1 Assigning numbers
2.2 Syntax of a DOI name
      2.2.1 General characteristics
      2.2.2 DOI prefix
      2.2.3 DOI suffix
2.3 Assignment of DOI name
      2.3.1 Principles of assignment
      2.3.2 Granularity
      2.3.3 Changed items
      2.3.4 Description
      2.3.5 Uniqueness
      2.3.6 Persistence
2.4 Case sensitivity
2.5 Character sets and encoding
      2.5.1 Encoding principles
      2.5.2 Encoding specifications
            2.5.2.1 UTF-8 Encoding
            2.5.2.2 Encoding recommendations when used in URLs
            2.5.2.3 Encoding issues
            2.5.2.4 Mandatory and recommended encoding for DOI deposit and URLs
2.6 Visual presentation and other representation of DOI names
      2.6.1 Screen and print presentation
      2.6.2 URI presentation
      2.6.3 Other representations
      2.6.4 Principles
2.7 Relationship between the DOI system and other ISO identifier schemes
      2.7.1 A brief outline
      2.7.2 Principles
      2.7.3 Expression of the relationship within the DOI system of DOI names to other identifier schemes
            2.7.3.1 Referent of a DOI name having an existing identifier within other identifier schemes
            2.7.3.2 Incorporation of an existing identifier into a DOI name
            2.7.3.3 Additional functionality
2.8 Relationship between the DOI system and other (non-ISO) identifier schemes
      2.8.1 Using DOI names to express relationships with existing legacy identifiers
      2.8.2 Benefits of using legacy identifiers with DOI names
2.9 DOI names and check digits
2.10 shortDOI service
2.11 The DOI system and Internet identifier specifications

3.1 Resolution
3.2 Simple resolution
3.3 Multiple resolution
3.4 Resolution requirements for the DOI system
3.5 Handle^® System technology
      3.5.1 Overview
      3.5.2 Technical support of DOI name resolution
      3.5.3 Software support for use of DOI names
3.6 The maintenance of DOI name "state data"
3.7 Resolution interface with Handle System
      3.7.1 Custom Resolution Software
      3.7.2 Native resolver
      3.7.3 Proxy server
      3.7.4 Other mechanisms
3.8 DOI system Proxy Server technical details
      3.8.1 Additional Functionality
            3.8.1.1 Local Content Servers (The "Appropriate Copy" Problem)
            3.8.1.2 Parameter Passing
            3.8.1.3 Resolution of Multiple URLs

4.1 Overview of the DOI^® data model
4.2 Aims of DOI data model policy
      4.2.1 Interoperability
      4.2.2 Administrative capability
4.3 DOI metadata
      4.3.1 DOI^® metadata Kernel
      4.3.2 Use of the DOI Kernel
      4.3.3 Adding values to the Kernel controlled vocabularies
      4.3.4 DOI Data Dictionary
      4.3.5 Vocabulary Mapping Framework
      4.3.6 Metadata integration:goals of the IDF
4.4 Metadata requirements, ISO 26324

5.1 Introduction
5.2 Designing Applications
      5.2.1 Basic Functionality
      5.2.2 Design Considerations
5.3 Multiple Resolution Applications
5.4 Linked Data
      5.4.1 Content Negotiation
5.5 Application Profiles
5.6 Expressing Relationships Between DOI Names
5.7 Using the DOI System with Digital Object Registry technologies

9.1 The DOI Directory
      9.1.1 DOI prefix assignment
      9.1.2 Using the Default service
      9.1.3 Running a local handle service
      9.1.4 Registering a DOI name with associated metadata
      9.1.5 Transferring DOI names from one registrant to another
      9.1.6 Transferring DOI names from one Registration Agency to another
      9.1.7 DOI system error messages
      9.1.8 Procedures for prefix allocation and DOI name deposit
9.2 Handle System
      9.2.1 Requirements for operating a local handle service
      9.2.2 Requirements for providers of resolution services
      9.2.3 Developing Handle System client software
9.3 DOI Data Dictionary
      9.3.1 Adding values to the Kernel controlled vocabularies
      9.3.2 Adding other new terms to the Data Dictionary
9.4 Reporting
9.5 Technical Information