Differences between Ox G1.03 and G1.04
                         April 16, 1994
             --------------------------------------
If you tend to have trouble with cycles, you should upgrade to
this version.

     * Vastly increased the amount of useful information reported
     by the generated evaluator upon detection of a cycle.

     * Improved the clarity of messages issued by Ox upon
     detection of incomplete or inconsistent attribute definition
     section.

     * Increased the default sizes of data structures for parse-
     tree management in the generated evaluator.

     * Fixed incorrect declaration of yyyerror under -I option.

     * Fixed incorrect behavior (regarding storage of dependee
     counts) of the generated evaluator upon detection of a
     cycle.



             Differences between Ox G1.02 and G1.03
                        February 8, 1994
             --------------------------------------
     * Fixed bug wherein Ox was not accepting the C++ reserved
     word `class' in attribute declarations.



             Differences between Ox G1.01 and G1.02
                        February 7, 1994
             --------------------------------------
This is mainly a bug-fix release.  Almost all of the bugs were of
the kind observed during the running of Ox, rather than during
running of the generated evaluator.  Thanks to those who sent bug
reports.

     * Fixed -S option, which wasn't correctly stripping @autoinh
     and @autosyn constructs from the Y-file.

     * Fixed minor incompatibilities regarding use with C++.

     * Fixed minor incompatibilities regarding use with Bison.

     * Fixed incorrect reporting of line numbers upon
     unterminated strings, comments, C-code sections, etc.

     * Eliminated various causes of segmentation faults that
     occurred when Ox tried to continue after its data structures
     became incorrect due to errors in the Y-file.

     * Disabled the use of nested macros, pending resolution of a
     bug that results in a segmentation fault.

     * Fixed bug wherein Ox produced (for grammars of more than
     255 grammar rules) evaluators that falsely reported cycles
     in the parse tree, possibly followed by a segmentation
     fault.

     * Fixed bug that caused a segmentation fault in the
     generated evaluator for parse trees with cycles.

     * Improved reporting in case of cycle detection--now prints
     the number of the grammar rule that labels the root of a
     subtree in which a cycle is detected.



     Changes, improvements, inclusions new to version G1.01
                        November 14, 1993
     ------------------------------------------------------
     * Ox Tutorial Introduction (19 pages).  This new paper uses
     examples and an informal style to quickly familiarize the
     reader with the main features of Ox.

     * (updated) Ox User Reference Manual (57 pages).  Includes
     coverage of features added since December 1992.  An index
     has been added, and coverage of certain features has been
     expanded.

     * Files containing all examples from the tutorial and the
     reference manual, ready to test and modify.

     * Ox grammars for popular languages.  Included are Yacc/Lex
     grammars for C, C++, Ada, Pascal, and FORTRAN that have been
     converted (mainly by modifying Makefiles) for use with Ox.

     * compatible names for Ox's output files:  Ox now outputs
     files with the the names `oxout.y' and `oxout.l', instead of
     `ox.out.y' and `ox.out.l'.  This is to make Ox translators
     more easily portable to operating systems (such as DOS) that
     have file-naming rules that are more restrictive than those
     of Unix.

     * minor bug fixes.