Print the results of a data set selection expression
selectds <dataset arg>
Show the results of a data set selection. Data set selection has the format:
Either the [<aspect>] or the <index> arguments may be omitted. A ’*’ can be used in place of <name> or [<aspect>] as a wildcard. The <index> argument can be a single number or a range separated by ’-’ and ’,’. This command does not affect the state in any way, but is particularly useful in interactive mode for determining the results of a dataset argument.