ANNOUNCE

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−Subject: Announcing Isabelle2021
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−To: [e-mail]
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−Isabelle2021 is now available.
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−This version introduces many changes over Isabelle2020: see the NEWS
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−file for further details. Here are various details:
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−* Improved HTML presentation in Isabelle/Scala, using PIDE markup.
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−* Improved PDF document preparation in Isabelle/Scala, using LuaLaTeX.
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−* Isabelle/jEdit: improved monitoring of Java and ML process.
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−* Isabelle/jEdit: various IDE feedback improvements.
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−* Pure: improved handling of named contexts and local syntax bundles.
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−* HOL: substantially reworked support for Word library.
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−* HOL: various syntax and library improvements.
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−* HOL: various Sledgehammer and SMT improvements, with updated external tools.
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−* HOL: support for Nitpick/Kodkod in Isabelle/Scala.
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−* ML: routine support for Isabelle/Scala functions in Isabelle/ML.
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−* System: support for Isabelle/Scala services defined in user-space.
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−* Experimental support for ARM64 platform on Linux and macOS (Apple Silicon).
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−You may get Isabelle2021 from the following mirror sites:
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−  Cambridge (UK)       https://www.cl.cam.ac.uk/research/hvg/Isabelle
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−  Munich (Germany)     https://isabelle.in.tum.de
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−  Sydney (Australia)   https://mirror.cse.unsw.edu.au/pub/isabelle
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−  Potsdam, NY (USA)    https://mirror.clarkson.edu/isabelle