Index: trunk/ippTools/src/dettool.c
===================================================================
--- trunk/ippTools/src/dettool.c	(revision 24757)
+++ trunk/ippTools/src/dettool.c	(revision 24779)
@@ -566,4 +566,5 @@
     PXOPT_COPY_F64(config->args, where, "-select_moon_phase_min", "moon_phase", ">=");
     PXOPT_COPY_F64(config->args, where, "-select_moon_phase_max", "moon_phase", "<=");
+    PXOPT_COPY_STR(config->args, where, "-comment", "comment", "LIKE");
 
     if (!psListLength(where->list)) {
Index: trunk/ippTools/src/dettoolConfig.c
===================================================================
--- trunk/ippTools/src/dettoolConfig.c	(revision 24757)
+++ trunk/ippTools/src/dettoolConfig.c	(revision 24779)
@@ -134,5 +134,5 @@
     psMetadataAddF64(definebyqueryArgs, PS_LIST_TAIL, "-select_moon_phase_min",  0,          "define min moon phase", NAN);
     psMetadataAddF64(definebyqueryArgs, PS_LIST_TAIL, "-select_moon_phase_max",  0,          "define max moon phase", NAN);
-
+    psMetadataAddStr(definebyqueryArgs, PS_LIST_TAIL, "-comment",                0,          "search by comment field (LIKE comparison)", NULL);
 
     psMetadataAddBool(definebyqueryArgs, PS_LIST_TAIL, "-pretend",  0,            "print the exposures that would be included in the detrend run and exit", false);