Index: /branches/pap/ippTools/src/difftool.c
===================================================================
--- /branches/pap/ippTools/src/difftool.c	(revision 23602)
+++ /branches/pap/ippTools/src/difftool.c	(revision 23603)
@@ -1272,4 +1272,6 @@
     PXOPT_COPY_S64(config->args, selectWhere, "-exp_id", "inputRawExp.exp_id", "==");
     PXOPT_COPY_STR(config->args, selectWhere, "-filter", "inputRawExp.filter", "==");
+    PXOPT_COPY_STR(config->args, selectWhere, "-obs_mode", "inputRawExp.obs_mode", "==");
+    PXOPT_COPY_STR(config->args, selectWhere, "-obs_mode", "templateRawExp.obs_mode", "==");
     PXOPT_COPY_STR(config->args, selectWhere, "-input_label", "inputWarpRun.label", "==");
     PXOPT_COPY_STR(config->args, selectWhere, "-template_label", "templateWarpRun.label", "==");
Index: /branches/pap/ippTools/src/difftoolConfig.c
===================================================================
--- /branches/pap/ippTools/src/difftoolConfig.c	(revision 23602)
+++ /branches/pap/ippTools/src/difftoolConfig.c	(revision 23603)
@@ -172,4 +172,5 @@
     psMetadataAddS64(definewarpwarpArgs, PS_LIST_TAIL, "-exp_id", 0, "search by exposure ID", 0);
     psMetadataAddStr(definewarpwarpArgs, PS_LIST_TAIL, "-filter", 0, "search by filter", NULL);
+    psMetadataAddStr(definewarpwarpArgs, PS_LIST_TAIL, "-obs_mode", 0, "search by observation mode", NULL);
     psMetadataAddF32(definewarpwarpArgs, PS_LIST_TAIL, "-timediff", 0, "limit time difference between input and template", NAN);
     psMetadataAddF32(definewarpwarpArgs, PS_LIST_TAIL, "-rotdiff", 0, "limit rotator difference between input and template", NAN);