ProgTutorial/Package/Ind_Intro.thy
2012-04-30 Christian Urban removed special ML-setup and replaced it by explicit markups (i.e., %grayML)
2011-11-07 Christian Urban tuned
2009-10-13 Christian Urban tuned the ML-output mechanism; tuned slightly the text
2009-07-30 Christian Urban polished the package chapter used FOCUS to explain the subproofs
2009-04-28 Christian Urban slight polishing
2009-04-01 Christian Urban more work on the simple inductive chapter
2009-03-31 Christian Urban used antiquotations
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