PROCEDURE: hdf_list_anns PURPOSE: prints the annotations in an hdf file KEYWORDS: filename: the filename from which annotations should be lifted anns(optional): a named variable in which the annotations will be returned $LastChangedBy: pcruce $ $LastChangedDate: 2007-12-07 22:48:56 -0800 (Fri, 07 Dec 2007) $ $LastChangedRevision: 2165 $ $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/idl_socware/trunk/external/IDL_GEOPACK/trace/ttrace2iono.pro $