First of all, set the language pair for which you would like to search for entries. The language to the left will be the language in which the search term is. Below that, enter the search term. This may be a name, a date, an address, or any other personal data that could possibly identify a person.
In most cases, the Concordance Search will do the job nicely. You may search for several search terms with the Concordance Search. If you do so, only the that contain all search terms will be displayed. The search terms do not have be next to each other in the crossTank entry.
The Advanced Search allows you to use the wildcard character "*" (= "no character" or "any number of characters") as well as the Boolean operators ("AND", "OR", and "NOT").
Click the filter icon next to the search mode to activate the filter settings. For example, you can set a filter on "Date" to limit the search to a certain period of time, or on "Subject", "Relation", "Project", or "User-defined system attributes" to limit the search accordingly.
Using the respective icon in the icon bar below, you can now mark the entries as described above. You can also select several entries and mark them all at once.
Using the respective icon in the icon bar at the top of the hit list, you can delete the translation unit(s) from your crossTank that are ready to be deleted.