+* Coding system independence
+Paul notes:
+
+ Currently Bison assumes 8-bit bytes (i.e. that UCHAR_MAX is
+ 255). It also assumes that the 8-bit character encoding is
+ the same for the invocation of 'bison' as it is for the
+ invocation of 'cc', but this is not necessarily true when
+ people run bison on an ASCII host and then use cc on an EBCDIC
+ host. I don't think these topics are worth our time
+ addressing (unless we find a gung-ho volunteer for EBCDIC or
+ PDP-10 ports :-) but they should probably be documented
+ somewhere.
+
+* Using enums instead of int for tokens.
+Paul suggests:
+
+ #ifndef YYTOKENTYPE
+ # if defined (__STDC__) || defined (__cplusplus)
+ /* Put the tokens into the symbol table, so that GDB and other debuggers
+ know about them. */
+ enum yytokentype {
+ FOO = 256,
+ BAR,
+ ...
+ };
+ /* POSIX requires `int' for tokens in interfaces. */
+ # define YYTOKENTYPE int
+ # endif
+ #endif
+ #define FOO 256
+ #define BAR 257
+ ...
+