--- /dev/null
+Bison News
+----------
+
+Changes in version 1.23:
+
+The user can define YYPARSE_PARAM as the name of an argument to be passed
+ into yyparse. The argument should have type void *.
+ It should actually point to an object.
+ Grammar actions can access the variable by casting it
+ to the proper pointer type.
+
+Error in printing reductions fixed.
+
+Line numbers in output file corrected.
+
+Configuration and compilation problems fixed.
+\f
+Changes in version 1.22:
+
+--help option added.
+
+Configuration and compilation problems fixed.
+\f
+Changes in version 1.21:
+
+Configuration and compilation problems fixed.
+\f
+Changes in version 1.20:
+
+Output file does not redefine const for C++.
+
+Configuration and compilation problems fixed.