-/* Replaces DS's active dataset by an input program that reads data
- from READER according to the rules in PARSER, using DICT as
- the underlying dictionary. Ownership of PARSER and READER is
- transferred to the input program, and ownership of DICT is
- transferred to the dataset. */
+/* Creates a new unnamed dataset in SESSION. The new dataset has an input
+ program that reads data from READER according to the rules in PARSER, using
+ DICT as the underlying dictionary. Transfers ownership of PARSER and READER
+ is to the input program, and ownership of DICT to the dataset. */