Index: trunk/ippTools/src/stacktool.c
===================================================================
--- trunk/ippTools/src/stacktool.c	(revision 27090)
+++ trunk/ippTools/src/stacktool.c	(revision 27119)
@@ -124,4 +124,5 @@
 
     // select based on properties of the raw exposures
+    PXOPT_COPY_STR(config->args,  where, "-select_comment",            "rawExp.comment", "==");
     PXOPT_COPY_STR(config->args,  where, "-select_inst",               "rawExp.camera", "==");
     PXOPT_COPY_STR(config->args,  where, "-select_telescope",          "rawExp.telescope", "==");
Index: trunk/ippTools/src/stacktoolConfig.c
===================================================================
--- trunk/ippTools/src/stacktoolConfig.c	(revision 27090)
+++ trunk/ippTools/src/stacktoolConfig.c	(revision 27119)
@@ -59,4 +59,5 @@
     psMetadataAddStr(definebyqueryArgs, PS_LIST_TAIL, "-select_exp_type", 0, "search for exp_type", "object");
     psMetadataAddStr(definebyqueryArgs, PS_LIST_TAIL, "-select_label", PS_META_DUPLICATE_OK, "search by warpRun label (LIKE comparison, multiple OK)", NULL);
+    psMetadataAddStr(definebyqueryArgs, PS_LIST_TAIL, "-select_comment", 0, "search for comment", NULL);
     psMetadataAddStr(definebyqueryArgs, PS_LIST_TAIL, "-select_inst", 0, "search for camera", NULL);
     psMetadataAddStr(definebyqueryArgs, PS_LIST_TAIL, "-select_telescope", 0, "search for telescope", NULL);