Index: trunk/ippTools/src/difftoolConfig.c
===================================================================
--- trunk/ippTools/src/difftoolConfig.c	(revision 24933)
+++ trunk/ippTools/src/difftoolConfig.c	(revision 25509)
@@ -114,4 +114,9 @@
     psMetadataAddF32(adddiffskyfileArgs, PS_LIST_TAIL, "-good_frac",  0, "define %% of good pixels", NAN);
     psMetadataAddBool(adddiffskyfileArgs, PS_LIST_TAIL, "-magicked",  0, "define magicked state", false);
+
+    // -advance
+    psMetadata *advanceArgs = psMetadataAlloc();
+    psMetadataAddS64(advanceArgs, PS_LIST_TAIL, "-diff_id", 0, "select by diff ID", 0);
+    psMetadataAddStr(advanceArgs, PS_LIST_TAIL, "-label", 0, "select by label", NULL);
 
     // -diffskyfile
@@ -267,4 +272,5 @@
     PXOPT_ADD_MODE("-todiffskyfile",    "", DIFFTOOL_MODE_TODIFFSKYFILE,     todiffskyfileArgs);
     PXOPT_ADD_MODE("-adddiffskyfile",   "", DIFFTOOL_MODE_ADDDIFFSKYFILE,    adddiffskyfileArgs);
+    PXOPT_ADD_MODE("-advance",          "", DIFFTOOL_MODE_ADVANCE,           advanceArgs);
     PXOPT_ADD_MODE("-diffskyfile",      "", DIFFTOOL_MODE_DIFFSKYFILE,       diffskyfileArgs);
     PXOPT_ADD_MODE("-revertdiffskyfile","", DIFFTOOL_MODE_REVERTDIFFSKYFILE, revertdiffskyfileArgs);