+/* game options */
+#define OPTION_ALL 0xffffffff
+#define OPTION_TTY 0x00000001 /* old interface */
+#define OPTION_CURSES 0x00000002 /* new interface */
+#define OPTION_IOMODES 0x00000003 /* cover both interfaces */
+#define OPTION_PLANETS 0x00000004 /* planets and mining */
+#define OPTION_THOLIAN 0x00000008 /* Tholians and their webs */
+#define OPTION_THINGY 0x00000010 /* Space Thingy can shoot back */
+#define OPTION_PROBE 0x00000020 /* deep-space probes */
+