forward reference
Computing term for referencing something defined later in the code or document. Common in programming language specifications and markup languages.
Forward references are not allowed in this language.
In XML, identifier references are used to resolve forward references.
後方参照 (backward reference) refers to something defined earlier, while 前方参照 refers to something defined later.
Compound of 前方 (forward) and 参照 (reference). A calque from English 'forward reference', used in computing contexts.