--- at-3.1.8/panic.c.usage	2002-01-17 23:15:27.000000000 -0500
+++ at-3.1.8/panic.c	2004-08-03 17:23:22.628494000 -0400
@@ -92,6 +92,8 @@
 /* Print usage and exit.
  */
     fprintf(stderr, "Usage: at [-V] [-q x] [-f file] [-m] time\n"
+	    "       at [-V] [-q x] [-f file] [-m] -t [[CC]YY]MMDDhhmm\n"
+	    "       at -c job [job...]\n"
 	    "       atq [-V] [-q x]\n"
 	    "       atrm [-V] [-q x] job ...\n"
 	    "       batch [-V] [-f file] [-m]\n");