You can
give the dataset or datasets processed in the actual program task with path
information, if necessary, in a direct way, where you can use the special
character ‘?’ for any character and ’*’ for any
group of characters in a dataset name (”wild-card information“) as usual in
MS-DOS to choose many datasets.
To enter an existing dataset and its path information into
the input field, you can click on the “folder” symbol
on the left side,
choose a dataset, and click on the “Open” button of the dataset choose
dialogue. Afterwards you can still edit the name in the input field as you
like.