src/HOL/Import/import.ML
2009-09-29 wenzelm 2009-09-29 explicit indication of Unsynchronized.ref;
2009-07-21 wenzelm 2009-07-21 proper context for Display.pretty_thm etc. or old-style versions Display.pretty_thm_global, Display.pretty_thm_without_context etc.;
2009-07-06 wenzelm 2009-07-06 structure Thm: less pervasive names;
2009-06-19 haftmann 2009-06-19 discontinued ancient tradition to suffix certain ML module names with "_package"