2011-04-20 ago added Theory.nodes_of convenience;
2011-04-16 ago modernized structure Proof_Context;
2011-04-16 ago prefer local name spaces;
2011-04-16 ago Name_Space: proper configuration options long_names, short_names, unique_names instead of former unsynchronized references;
2011-04-06 ago typed_print_translation: discontinued show_sorts argument;
2011-04-06 ago renamed Standard_Syntax to Syntax_Phases;
2011-04-05 ago moved decode/parse operations to standard_syntax.ML;
2011-04-05 ago discontinued special treatment of structure Ast: no pervasive content, no inclusion in structure Syntax;
2011-04-03 ago added Position.reports convenience;
2011-01-06 ago Diagnostic command to show locale dependencies.
2010-11-28 ago added 'syntax_declaration' command;
2010-11-27 ago more explicit Isabelle_System operations;
2010-11-06 ago mark 'cd' and 'commit' as control command -- not usable in asynchronous document model, likely to cause confusion in Proof General;
2010-09-20 ago renamed structure PureThy to Pure_Thy and moved most content to Global_Theory, to emphasize that this is global-only;
2010-09-17 ago tuned signature of (Context_) variants;
2010-09-06 ago discontinued obsolete ProofContext.prems_limit;
2010-09-03 ago pretty_goals: turned some global references and function arguments into configuration options (goals_limit = 10, goals_total = true, show_main_goal = false) depending on the context;
2010-08-30 ago tuned;
2010-08-11 ago prefer plain Attrib.eval_thms with plain Proof.context instead of Proof.state;
2010-08-03 ago eliminated Thy_Info.thy_ord, which is not really stable in interactive mode, since it depends on the somewhat accidental load order;
2010-07-31 ago print_interps shows interpretations in proofs.
2010-07-27 ago simplified/clarified theory loader: more explicit task management, kill old versions at start, commit results only in the very end, non-optional master dependency, do not store text in deps;
2010-07-25 ago simplified handling of theory begin/end wrt. toplevel and theory loader;
2010-07-25 ago Thy_Load.check_loaded via Theory.at_end;
2010-07-24 ago moved management of auxiliary theory source files to Thy_Load -- as theory data instead of accidental loader state;
2010-07-21 ago thm_deps/unused_thms: Context.get_theory based on proper theory ancestry, not accidental theory loader state;
2010-07-21 ago thy_deps: more direct comparison of sessions, which is presumably what "unfold" is meant to indicate here -- also avoid referring to accidental theory loader state;
2010-06-03 ago diagnostic commands 'ML_val' and 'ML_command' may refer to antiquotations @{Isar.state} and @{Isar.goal};
2010-05-31 ago modernized some structure names, keeping a few legacy aliases;
2010-05-30 ago replaced ML_Lex.read_antiq by more concise, which includes full read/report with explicit position information;
2010-05-27 ago renamed structure PrintMode to Print_Mode, keeping the old name as legacy alias for some time;
2010-05-15 ago refer directly to structure Keyword and Parse;
2010-05-08 ago unified/simplified Pretty.margin_default;
2010-04-25 ago replaced Sorts.rep_algebra by slightly more abstract selectors classes_of/arities_of;
2010-04-25 ago modernized naming conventions of main Isar proof elements;
2010-04-16 ago keep localized 'types' as regular non-old-style version -- 'type_abbrev' as 'type' just causes too many problems, e.g. clash with "type" in translations or "type:" argument syntax;
2010-04-16 ago replaced generic 'hide' command by more conventional 'hide_class', 'hide_type', 'hide_const', 'hide_fact' -- frees some popular keywords;
2010-04-16 ago modernized old-style type abbreviations;
2010-03-22 ago added Specification.axiom convenience;
2010-03-21 ago minor renovation of old-style 'axioms' -- make it an alias of iterated 'axiomatization';
2010-02-16 ago simplified meaning of ProofContext.verbose;
2009-11-13 ago modernized structure Local_Theory;
2009-11-08 ago print_theorems: suppress concealed (global) facts, unless "!" option is given;
2009-11-05 ago allow "pervasive" local theory declarations, which are applied the background theory;
2009-11-02 ago structure Thm_Deps;
2009-11-02 ago modernized structure Proof_Display;
2009-11-02 ago modernized structure Proof_Syntax;
2009-11-01 ago modernized structure Context_Rules;
2009-10-28 ago renamed Proof.flat_goal to Proof.simple_goal;
2009-10-27 ago ProofContext.setmp_verbose_CRITICAL;
2009-10-24 ago renamed NameSpace to Name_Space -- also to emphasize its subtle change in semantics;
2009-10-02 ago replaced Proof.get_goal state by Proof.flat_goal state, which provides the standard view on goals for (semi)automated tools;
2009-09-29 ago Propagation of mixins for interpretation; reactivated diagnostic command print_interps.
2009-07-23 ago renamed simpset_of to global_simpset_of, and local_simpset_of to simpset_of -- same for claset and clasimpset;
2009-07-21 ago proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
2009-07-19 ago parallel_proofs: more fine-grained control with optional parallel checking of nested Isar proofs;
2009-06-27 ago tune File.isabelle_tool signature;
2009-03-30 ago tuned;
2009-03-30 ago added Toplevel.previous_node_of;
2009-03-18 ago more precise type Symbol_Pos.text;