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A document type declaration, or DOCTYPE, is an instruction that associates a particular XML or SGML document (for example, a web page) with a document type definition (DTD) (for example, the formal definition of a particular version of HTML 2.0 - 4.0). In the serialized form of the document, it manifests as a short string of markup that conforms to a…
Art, Common DTDs & Syntax
Explore the main themes, entities and connections around Document type declaration. Start with the topic map, then use the sections below for research and deeper semantic analysis.
Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.
High-confidence facts extracted from structured source data. Use them as anchors for further research.
Browse the full topic structure. Each item opens a new analysis centered on that subject.
Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.
See the strongest relationship patterns around the current topic before diving into the raw triples.
Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.
dtd doctype html xhtml document identifier declaration internal html5 xml syntax example subset public system web external type dtds name
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| spaces | instance of | and separating syntax | 0.80 | text |
| Document type declaration | related to Example | The | 0.60 | section |
| Document type declaration | related to Example | World Wide Web | 0.60 | section |
| Document type declaration | related to Example | This | 0.60 | section |
| Document type declaration | related to Example | XHTML | 0.60 | section |
| Document type declaration | related to Example | DTD | 0.60 | section |
| Document type declaration | related to Example | W3C//DTD XHTML | 0.60 | section |
| Document type declaration | related to Example | Transitional//ENand | 0.60 | section |
| Document type declaration | related to Example | TR/xhtml1/DTD/xhtml1-transitional | 0.60 | section |
| Document type declaration | related to Example | An | 0.60 | section |
| Document type declaration | related to Example | No | 0.60 | section |
| Document type declaration | related to Example | The HTML | 0.60 | section |
These clusters group vocabulary that occurs around closely connected concepts in the source material.
Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.