NAME: cdf_set_cdf27 SYNTAX: cdf_set_cdf27 [, /yes | /no] PURPOSE: Call CDF_SET_CDF27_BACKWARD_COMPATIBLE but don't bomb unnecessarily when run on an (unpatched) pre-IDL 6.3, pre-CDF 3.1 installation of IDL. VERSION: $LastChangedBy: kenb-mac $ $LastChangedDate: 2006-12-13 11:21:07 -0800 (Wed, 13 Dec 2006) $ $LastChangedRevision: 88 $ $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/general/CDF/cdf_set_cdf27.pro $