+ * Revision 1.23 2005/11/18 09:46:50 beck
+ * removed depency of bool type and stdbool.h (not C89)
+ *
+ * Revision 1.22 2005/08/16 10:18:35 beck
+ * create_abstraction() now returns an error code if the file could not
+ * be opened.
+ *
+ * Revision 1.21 2005/03/10 10:05:38 goetz
+ * chanmged method name
+ *