Exception Dataset

If you want to exclude particular datasets form processing, you can identify a dataset which comprises one dataset item per line (possibly with ”wild-card information“) or one combination of dataset and directory information covered in "<",">" brackets per line identifying datasets  n o t  being processed, even if these datasets are mentioned as datasets to process. To do this, you can enter an existing exception dataset and its path information into the corresponding input field by clicking on the “folder” symbol on the left side. After you have chosen a dataset and have clicked on the “Open” button of the dataset choose dialogue, the name of the dataset including path information is available in the input field and there you can still edit the name as you like.

You can prepare a dataset with such dataset items before, if necessary, or you can create such a dataset by dialogue.

The default extension with such exception datasets covering dataset names is “exn”.

The following datasets are  n o t  encoded/decoded by the current program task, even if they are not mentioned by the exception dataset to preserve the possibility of decoding datasets encoded before:

§ the module dataset containing the called program just running,

§ the dataset for control information,

§ used datasets containing the names of the datasets to be processed, if they are given
(e.g. the exception dataset too, if it is given here),

§ used datasets containing the (opening or closing) key, if they are given,

§ used datasets containing the overlay information, if they are given,

§ used parameter datasets, if they are given.

Not using an exception dataset, the program assumes that all other datasets mentioned as datasets to process have to be processed in fact.

Choosing or entering an exception dataset , you can edit the contents of this dataset by selecting the “open dataset” button below the input field. You have the possibility e.g. using the dataset choosing dialogue (clicking on the “folder” symbol ) to enter single datasets to the dataset name field for that used as an editing field and modify it, before you can put it on the list of datasets (“insert” button). To insert an entry, it is put in place above the marked item. Selecting the “delete” button, you can remove a marked item and put it into the editing field. Possibly you can change it here and put it on the list again using the “insert” button. To close work and pass the dataset list to the dataset opened, you have to select “save namelist to dataset” button followed by the “close dataset” button. If you would reject the dataset list, you can negate the question about saving the list after selecting the “close” button.