noun
document type declaration subset
Technical term in SGML and XML: the part of a document type declaration that contains entity and element declarations, often enclosed in square brackets.
SGMLでは、文書型宣言部分集合に内部実体を定義できる。
In SGML, internal entities can be defined in the document type declaration subset.
文書型宣言 is the broader document type declaration; 文書型宣言部分集合 is specifically the subset part that contains additional declarations.
Compound of 文書型 (document type), 宣言 (declaration), 部分 (part), and 集合 (set). A direct translation of the English term 'document type declaration subset'.