noun
explicit scope terminator
A computing term for a delimiter that explicitly marks the end of a scope, such as a closing bracket or end-of-block marker in programming languages or markup.
XMLでは、終了タグが明示範囲符として使われる。
In XML, the closing tag is used as an explicit scope terminator.
Compound of 明示 (explicit) + 範囲 (scope) + 符 (mark/symbol). A technical term likely coined in computing contexts.