progtutorial.pdf
2010-05-27 Christian Urban updated to new Isabelle
2010-05-24 Christian Urban added phi for morphisms
2010-05-17 Christian Urban updated to new Isabelle
2010-05-17 Christian Urban updated to new isabelle
2010-04-26 Christian Urban updated to new Isabelle
2010-04-24 Christian Urban added a section to the introduction; described @{make_string}
2010-04-07 Christian Urban added something about ERROR and Fail
2010-04-07 Christian Urban updated to new Isabelle
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