External reference
This article is about nesting part of content from external document inside another document. It differ Xref for meaning as Cross-reference.
History[edit]
Early idea of master copy and occurrences was applied in 1963 in a computer program Sketchpad.[1]
External reference drawings was introduced in CAD programs at second half of 80's years of 20th century. Was implemented in Intergraph's Interactive Graphics Design System (IGDS) CAD programs described in Intergraph Standard File Formats.[2] Most popular became with Autodesk Autocad.
In 2005 was similar approach introduced in DITA where content of documents can be reused across multiple publications. Fragments of content within topics can be reused through the use of content references (conref or conkeyref), a transclusion mechanism.
Using[edit]
An external reference (xRef) is a kind of a block in that it is stored in the current drawing's block library. However, unlike a block, the objects associated with an xref definition are not stored in the current drawing; they are stored in another drawing file. When you create an xref, the entire contents of this other file are imported as a block.
References[edit]
- ISFF Specification - Intergraph Standard File Formats (Element Structure)
- External Reference Drawings - Bentley MicroStation online help
- Referenced Drawings - Autodesk Knowledge Network
This article "External reference" is from Wikipedia. The list of its authors can be seen in its historical and/or the page Edithistory:External reference. Articles copied from Draft Namespace on Wikipedia could be seen on the Draft Namespace of Wikipedia and not main one.
- ↑ Sutherland, Ivan E. (1963). "Sketchpad". Proceedings of the May 21-23, 1963, spring joint computer conference on - AFIPS '63 (Spring). New York, New York, USA: ACM Press. doi:10.1145/1461551.1461591.
- ↑ "Intergraph Standard File Formats (Element Structure)". dgnlib.maptools.org. Retrieved 2021-01-07.
