DTD entities

DTD (Document Type Definition) entities are placeholders or shortcuts used within XML documents to represent reusable pieces of data or text. Instead of repeatedly typing the same information, an entity assigns a name to it, so you can reference that name whenever needed. When the document is processed, the entity name is replaced with its full content, making editing more efficient and reducing errors. Entities help manage complex or repetitive data smoothly, ensuring consistency and making XML documents more maintainable.