Q: Where are the downloaded files stored? ---------------------------------------------------------------------------------------------------- A: The plugin saves the files in the main file directory that can be set in the preferences of JabRef. If a per-database specific file directory is set, it is preferred over the global setting. The filename consists of the BibTeX key plus the extension ".pdf". Q: I need to use a proxy server to obtain access to an online journal pdf file. How do I configure JabRef to use a proxy server? ---------------------------------------------------------------------------------------------------- A: If you want to use, e.g., a SOCKS proxy, run JabRef with the following command line java -DsocksProxyHost=host -DsocksProxyPort=port -jar JabRef-X.jar , where host and port give the hostname and port number of your SOCKS proxy and X is the JabRef version you are using. A general documentation that also includes HTTP proxies (and how to specify a username/password) can be found here: http://java.sun.com/j2se/1.5.0/docs/guide/net/properties.html .