Use the SAVE subcommand to have your data set retained as a permanent data set. If you use SAVE without an operand, the updated version of your data set replaces the original version. When you specify a new data set name as an operand, both the original version and the updated version of the data set are available for further use.

When you edit a data set with a variable or variable-blocked record format, each record (line) is padded with blanks to the end of the record. When you save the data set, the blanks are eliminated and the length adjusted accordingly.