Lesson plan

XAD (software)

The XAD (eXternal Archive Decruncher) system is an open-source client-based unarchiving system for the Amiga. This means there is a master library called xadmaster.library which provides an interface between the client and the user application and there are clients handling the special archive formats. Three different types to handle file and disk archives and also disk image files (filesystem) are possible. They can be made by anyone. The master library itself includes some of these clients internally to make the work somewhat easier for the package maintainer and the user installing it. The XAD subsystem was officially included in AmigaOS 3.9 along with a simple ReAction GUI-based tool for unarchiving supported file archives. It is also part of MorphOS since version 2.0. The Mac OS X frontend is called The Unarchiver and written in Objective-C.

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Article summary

The XAD (eXternal Archive Decruncher) system is an open-source client-based unarchiving system for the Amiga. This means there is a master library called xadmaster.library which provides an interface between the client and the user application and there are clients handling the special archive formats. Three different types to handle file and disk archives and also disk image files (filesystem) are possible. They can be made by anyone. The master library itself includes some of these clients internally to make the work somewhat easier for the package maintainer and the user installing it. The XAD subsystem was officially included in AmigaOS 3.9 along with a simple ReAction GUI-based tool for unarchiving supported file archives. It is also part of MorphOS since version 2.0. The Mac OS X frontend is called The Unarchiver and written in Objective-C.

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  1. Summarise the article in your own words. Which single claim would you verify first, and why?
  2. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
  3. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

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