Index: trunk/ppMerge/src/ppMergeArguments.c
===================================================================
--- trunk/ppMerge/src/ppMergeArguments.c	(revision 18112)
+++ trunk/ppMerge/src/ppMergeArguments.c	(revision 18365)
@@ -162,4 +162,20 @@
     psMetadataAddBool(arguments, PS_LIST_TAIL, "-mask-chip",    0, "Measure mask statistics by chip?", false);
 
+    psMetadataAddBool(arguments, PS_LIST_TAIL, "-mask-smooth-suspect",  0, "smooth suspect pixels?", false);
+    psMetadataAddF32(arguments, PS_LIST_TAIL, "-mask-smooth-scale",  0, "smoothing sigma for suspect pixels", NAN);
+
+    // chip & cell selections are used to limit chips to be processed
+    int argnum;
+    if ((argnum = psArgumentGet (argc, argv, "-chip"))) {
+        psArgumentRemove (argnum, &argc, argv);
+        psMetadataAddStr (config->arguments, PS_LIST_TAIL, "CHIP_SELECTIONS", PS_DATA_STRING, "", argv[argnum]);
+        psArgumentRemove (argnum, &argc, argv);
+    }
+    if ((argnum = psArgumentGet (argc, argv, "-cell"))) {
+        psArgumentRemove (argnum, &argc, argv);
+        psMetadataAddStr (config->arguments, PS_LIST_TAIL, "CELL_SELECTIONS", PS_DATA_STRING, "", argv[argnum]);
+        psArgumentRemove (argnum, &argc, argv);
+    }
+
     if (argc == 1 || !psArgumentParse(arguments, &argc, argv) || argc != 3) {
         usage(argv[0], arguments);
@@ -269,4 +285,6 @@
     VALUE_ARG_RECIPE_BOOL("-mask-chip",     "MASK.CHIPSTATS");
 
+    VALUE_ARG_RECIPE_BOOL("-mask-smooth-suspect", "MASK.SMOOTH.SUSPECT");
+    VALUE_ARG_RECIPE_FLOAT("-mask-smooth-scale", "MASK.SMOOTH.SCALE", F32);
 
     const char *maskModeStr = psMetadataLookupStr(NULL, arguments, "-mask-mode"); // Mode to identify bad pix