open marked section declaration
Technical term in SGML/XML document processing; refers to the opening declaration of a marked section, typically <![CDATA[ or similar constructs.
In SGML, an open marked section declaration indicates the start of a special section.
Compound of 開いている (hiraiteiru, 'open') + マーク (māku, 'mark') + 区間 (kukan, 'section') + 宣言 (sengen, 'declaration'), a direct translation of the English computing term 'open marked section declaration'.