Excluding records is a method of data hiding that can be helpful when performing searches on a data set. If you know that specific records can be excluded from the search, you can exclude them from the view to avoid any mixed search results. Records that are excluded from the data set are displayed as a shadow line and are only excluded during that particular editor session. Once the edit session ends, all records that were previously excluded will become visible again the next time the data set is opened under similar conditions.
To identify the number of records that have been excluded, hover your mouse cursor over the shadow line to display the number of records. A text box displays with the number of records excluded.