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TeXShop is a free TeX editor and previewer for Mac OS X. It is licensed under the GNU GPL. It was developed by the American mathematician Richard Koch. TeXShop was created especially for the Mac OS X user interface Aqua and capitalized on the native PDF support of the Macintosh operating system. Mitsuhiro Shishikura enhanced it by adding the ability to transfer mathematical expressions directly into Keynote presentations. TeXShop requires an existing TeX installation and is currently bundled with the MacTeX distribution. The program (then version 1.19) won the 2002 Apple Design Award of Best Mac Open Source Port for its capability to display scientific and technical documents created in TeX format. In fact, TeXShop makes it possible, thanks first to pdfsync. sty, to switch back and forth between code and preview easily, jumping at a corresponding spot, simply by a CMD-click. From TeXShop 1.35 onward this also works with multipart documents, which are joined by \include. Also, with version 1.35 TeXShop was extended with XeTeX support. The Tiger version of TeXShop is capable of jumping from preview to code and vice versa without pdfsync. sty, using the PDF search technology built-in to Tiger . See iTeXMac for a stronger implementation of such a technology also known as pdf synchronization. Starting with version 2.18, TeXShop has included support for SyncTeX. This technology also allows to jumping from preview to code and vice versa without including any special style file, but is much more reliable than PDF search, especially for documents that include mathematical formulae. Version 2.26 in universal binary was released on the 17th of March 2009, requiring Mac OS X v. 10.4.3 or later with Mac OS X v. 10.5 recommended. Version 2.28 was released on 7 November 2009 as part of the TeX Live 2009 release of MacTeX. For users of Mac OS X v.10.2 and 10.3 Release 1.43 remains available. There is a support forum, which is administered by the German project ApfelWiki. de. http://www. apfelwiki. de/Main/TeXShop


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Dirk Olmes