Insert the smallest label (in the first field) or the biggest label (in the second field) of tone rows you are searching for.
E.g. to search for tone rows with label greater than 943 enter 944 in the first field, to search for tone rows with labels from 12 to 126000 insert 12 into the first and 126000 into the second field. Please take care that the number input into the first field may not be greater than the number in the second field.