文ぶん書しょ型がた宣せん言げん

noun

document type declaration

Computing term for the declaration at the beginning of an SGML or XML document that specifies its DTD or schema.

• HTML文ぶん書しょの先せん頭とうには文ぶん書しょ型がた宣せん言げんを記き述じゅつします。

  A document type declaration is written at the beginning of an HTML document.