### 2.1 Architectural Specification: Base

Base DITA includes the topic, map elements, metadata, classification, and specialization elements. It also includes domains for hazard statement, typographic, and utility elements

The base section of the architectural specification contains the following parts:

- An introduction, which provides background concepts and an overview of the architecture
- The DITA markup section, which provides an overview of DITA topics, DITA maps, and DITA metadata
- The DITA processing section, which provides descriptions of common DITA-processing expectations
- The configuration, specialization, and constraints section, which provides details of the mechanisms that DITA provides for defining, extending, and constraining DITA document types

Previous Topic: Chapter 2. Architectural specification

Next Topic: 2.1.1 Introduction to DITA

Parent Topic: Chapter 2. Architectural specification

Child Topics:

2.1.1 Introduction to DITA

2.1.2 DITA markup

2.1.3 DITA processing

2.1.4 Configuration, specialization, and constraints

Sibling Topics:

Technical content architecture

Learning and training architecture