Index: trunk/ippScripts/scripts/phase0exp.pl
===================================================================
--- trunk/ippScripts/scripts/phase0exp.pl	(revision 8196)
+++ trunk/ippScripts/scripts/phase0exp.pl	(revision 8197)
@@ -28,4 +28,8 @@
 ###			   "CELL.TIME" # Time of exposure --- not yet implemented
 			   );
+if (scalar @ARGV == 0) {
+    die "Perform phase 0 processing on the component files of an FPA.\n\n" .
+	"Usage: $0 FPA_FILE_1.fits FPA_FILE_2.fits FPA_FILE_3.fits ...\n\n";
+}