August 24, 2010
    Added filter for orgname.pgcode.

April 14, 2009
    Use /sviewer/viewer.fcgi instead of /entrez/viewer.fcgi.
    Allow to set the viewer.fcgi URL in the INI file.

March 10, 2009
    Fixed HTTP header forwarding from viewer.fcgi to the client
    (Content-type, Content-disposition, status).

September 04, 2008
    Added filter for BioSource.PCRPrimers.
