+/* ACME_MESS:
+ * This symbol, if defined, indicates that error messages should be
+ * should be generated in a format that allows the use of the Acme
+ * GUI/editor's autofind feature.
+ */
+#undef ACME_MESS /**/
+
+/* UNLINK_ALL_VERSIONS:
+ * This symbol, if defined, indicates that the program should arrange
+ * to remove all versions of a file if unlink() is called. This is
+ * probably only relevant for VMS.
+ */
+/* #define UNLINK_ALL_VERSIONS / **/
+
+/* VMS:
+ * This symbol, if defined, indicates that the program is running under
+ * VMS. It is currently automatically set by cpps running under VMS,
+ * and is included here for completeness only.
+ */
+/* #define VMS / **/
+
+/* ALTERNATE_SHEBANG:
+ * This symbol, if defined, contains a "magic" string which may be used
+ * as the first line of a Perl program designed to be executed directly
+ * by name, instead of the standard Unix #!. If ALTERNATE_SHEBANG
+ * begins with a character other then #, then Perl will only treat
+ * it as a command line if it finds the string "perl" in the first
+ * word; otherwise it's treated as the first line of code in the script.
+ * (IOW, Perl won't hand off to another interpreter via an alternate
+ * shebang sequence that might be legal Perl code.)
+ */
+/* #define ALTERNATE_SHEBANG "#!" / **/