push normalization further -- avoid theorems that are duplicates of each other except for equality symmetry (esp. for "list.distinct(1)" vs. "(2)" etc.)

disable Find_Unused_Assms_Examples for now, to recover isatest sanity;

less massive arrow heads;

added explicit zoom box;

some attempts at more discrete scale factor;

more official graphics context with font metrics;

just one class with parameters;

initial layout coordinates more like old browser; tuned geometry defaults;

added speculative options for jEdit;

separate instance of class Parameters for each Main_Panel -- avoid global program state; misc tuning;

discontinued long names flag -- better done via entity markup, without affecting layout;

tuned;

tuned;

tuned min/max;

tuned;

keep diagnostic command -- avoid confusion when it disappears;