Index: trunk/psphot/src/psphotArguments.c
===================================================================
--- trunk/psphot/src/psphotArguments.c	(revision 31154)
+++ trunk/psphot/src/psphotArguments.c	(revision 33690)
@@ -217,4 +217,5 @@
     pmConfigFileSetsMD (config->arguments, &argc, argv, "PSPHOT.PSF", "-psf",      "-psflist");
     pmConfigFileSetsMD (config->arguments, &argc, argv, "SRC",        "-src",      "-srclist");
+    pmConfigFileSetsMD (config->arguments, &argc, argv, "EXPNUM",     "-expnum",   "-expnumlist");
 
     if (argc == 1) {