Current behavior to execute an extraction:

• Open the extraction list tool
• Select an extraction and click on the "Execute" button
• A dialog box allows you to select the needed parameters to launch the extraction (potential variables, mail address to receive the notification, stylesheets, ...)
• Fill the parameters and click on OK button
• The extraction is executed and a notification is sent by mail at the given address. The result is an XML file on your file system

An extraction can be very complex and there is no way to get information about the extraction you are about to execute.

Add a content to describe the extraction. An extraction has one description, a description is used for only one extraction (1-1 relation)

Here is the new behavior to execute an extraction:

• Open the extraction list tool
• Select an extraction and click on the "?" button
• A tool is opened with 2 parts
  • the part on top displays the content that describes the extraction
  • in the part at the bottom, there is a form that allows you to select the needed parameters to launch the extraction and an "Execute" button
• Fill the parameters and click on "Execute" button
• The extraction is executed and a notification is sent by mail at the given address. The result is an XML file on your file system

Add a button for users allowed to modify extractions. This button allows t modify the extraction's description