The installation of this extension is very simple. Just connect to the Typo3 Extension Repository and download «Content UnEraser» (content_uneraser), located in the backend modules section. You'll also need the download and install the «Developer API» (api_macmade) extension.
The extension is available in the main menu, in the tools section.
The first thing you'll see is an overview of the Typo3 tables. Notice that only the tables where records contains a delete flag are available.
From here, you can view the amount of deleted records in every table. You can then decide to erase them completely, either by clicking the minus sign on a row, or by selecting some tables and by pressing the submit button.
You can also click on a table title (or select it from the drop-down menu) to get a detailed view of the table.
All the deleted records will be listed here. You'll see in the columns the record's creation and modification dates, and the name of the user who created it.
You can recover a record by clicking the plus sign, and definitively erase it with the minus sign. You can also view a specific record by clicking the information icon.
If you select multiple records, you'll have to use to options in top of the records list. If you decide to recover the selected records, you'll be able to choose between three recovering method. The first one (selected by default) will hide every recovered record, to avoid them to be displayed. The second one will force them to be shown, and the third one will leave them as they are.