-/* 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. */
+/* 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. */