noun
replaceable character data
Computing term for character data that can be replaced or substituted, often in the context of text processing, markup languages, or data formats.
XMLでは、置換可能文字データはパーサーによって処理される。
In XML, replaceable character data is processed by the parser.
Compound of 置換 (replacement), 可能 (possible), 文字 (character), and データ (data). A technical term likely coined in computing contexts.