+/* User Information queries */
+
+#define U_NAME 0
+#define U_UID 1
+#define U_SHELL 2
+#define U_LAST 3
+#define U_FIRST 4
+#define U_MIDDLE 5
+#define U_STATE 6
+#define U_MITID 7
+#define U_CLASS 8
+#define U_MODTIME 9
+#define U_MODBY 10
+#define U_MODWITH 11
+#define U_END 12
+
+/* User states (the value of argv[U_STATE] from a user query) */
+
+#define US_NO_LOGIN_YET 0
+#define US_REGISTERED 1
+#define US_NO_PASSWD 2
+#define US_DELETED 3
+#define US_NOT_ALLOWED 4
+#define US_END 5
+
+/* User shell queries */
+
+#define USH_NAME 0
+#define USH_SHELL 1
+#define USH_END 2
+