NAME: cor_test_udata PURPOSE: Tests the existence of data stored in a descriptor under the specified name. CATEGORY: NV/LIB/COR CALLING SEQUENCE: data = cor_test_udata(crx, name) ARGUMENTS: INPUT: crx: Any subclass of CORE. Only one descriptor may be provided. name: Name associated with the data to test. OUTPUT: NONE KEYWORDS: INPUT: NONE OUTPUT: NONE RETURN: True if the data is stored under the given name, false otherwise. STATUS: Complete MODIFICATION HISTORY: Written by: Spitale, 1/1998 Adapted by: Spitale, 5/2016