Intern:Archive/Direct download interface

With the Direct Download Interface (DDI) custom retrievals can be created to download specific metadata tables just by a link on any web page. The content of the list will always reflect the most recent content of the system whenever the link is used.
 * Choose the table of interest.
 * Define a retrieval on the 'Retrieval card'.
 * Define or adjust the configuration on the 'Config card'.
 * To assure that the retrieval returns the desired results, test it by pressing the 'Fetch' button.
 * Save the retrieval and the configuration with the 'Save' button on the 'Retrieval' card, resp. the 'Config' card. Give appropriate, identical file names, keep the extensions '.retr' and '.conf'.
 * You can reuse your retrieval anytime you need it with the 'Load' buttons on the 'Retrieval' card and the 'Config' card or mail it.
 * Copy both files into a designated folder on your webserver.
 * Create an URL using the following syntax: http://www.Pangaea.de/ddi?request= /&format=&login=
 * request: specifies the filename without extension.
 * format (opt): specifies the format (text or html;
 * textfile: requests for a filename for Save as or you can add a filename between the ‘ddi’ and the ‘?’: e.g. .../ddi/Filename.tab?request=... (use *.tab as extension).
 * login (opt): displays a login prompt before downloading data to enable password protection to unpublished data.

Detailed documentation of ddi: http://www.pangaea.de/help/help.php/directdownload/