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The term cross-reference can refer to either: * An instance within a document which refers to related information elsewhere in the same document. In both printed and online dictionaries cross-references are important because they form a network structure of relations existing between different parts of data, dictionary-internal as well as dictionary external.〔Sandro Nielsen (1999): "Mediostructures in Bilingual LSP Dictionaries." In: ''Lexicographica. International Annual for Lexicography'' 15, 90–113.〕 * In an index, a cross reference is often denoted by ''See also''. For example, under the term ''Albert Einstein'' in the index of a book about Nobel Laureates, there may be the cross-reference ''See also: Einstein, Albert''. * In hypertext, cross-referencing is maintained to a document with either in-context (XRIC) or out-of-context (''XROC'') cross-referencing. These, are, similar to KWIC and KWOC. * In programming, "cross-referencing" means the listing of every file name and line number where a given named identifier occurs within the program's source tree. * In a relational database management system, a table can have an xref as prefix or suffix to indicate it is a cross-reference table that joins two or more tables together via primary key. *A cross reference helps strengthen a document's structure and supports the whole document. == Structure of a cross reference == In a document, especially those authored in a Content management system, a cross-reference has two major aspects: * A visible form that appears when the document is presented to the reader..... * A technical mechanism that resides within the system The visible form contains text, graphics, and other indications that: * Enable the reader to follow the cross reference to the referenced content * May enable the reader to understand what is being referred to, or what to expect upon following the reference * May present to the reader some information from the referenced content The technical mechanism that resides within the system: * Identifies what location is being referred to * Permits the system to present appropriate referencing text when the location containing the reference is presented to a reader * Permits the system to offer a control (such as a link) that a reader can use when the content is presented in electronic form to access the referenced content 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Cross-reference」の詳細全文を読む スポンサード リンク
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